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Electricity is an important part of our daily lives. We use it to light our homes, run appliances, and power gadgets. But do you know how electric current works and what effects it has? In Electric Current and Its Effects Class 7 MCQ, you will find important questions to help you understand this topic better.
In this chapter, you will learn about electric circuits, heating effects of electric current, magnetic effects, and the working of electric components like bulbs, switches, and fuses. To check your knowledge, we have provided MCQ on Electric Current and Its Effects Class 7 with Answers PDF, making it easier for you to revise important concepts.
If you are preparing for exams or just want to improve your understanding, these Electric Current and Its Effects Class 7 Questions with Answers will be very useful. These MCQs Questions are based on the NCERT Solutions for Class 7 Science and follow the CBSE Class 7 Science Syllabus to ensure complete preparation.
At Infinity Learn, we provide well-structured learning materials to help students succeed. Explore our Electric Current and Its Effects Class 7 MCQ and make your learning fun and easy!
Class 7 Science Chapter 7 Electric Current and Its Effects MCQ Questions with Answers
Electricity plays a vital role in our daily lives, powering everything from lights to appliances. Class 7 Science Chapter 7 Electric Current and Its Effects MCQ Questions with Answers help students understand important concepts like electric circuits, heating and magnetic effects of current, and the working of electrical components. These MCQs are based on the NCERT Solutions for Class 7 Science and CBSE Class 7 Science Syllabus, ensuring a strong foundation for exams and practical knowledge.
Here are the important MCQ questions for class 7 Science chapter 14 Weather, Electric Current and Its Effects answers:
Questions: 1
Which symbol represents an electric cell in a circuit diagram?
a) A long line and a short thick line
b) A circle
c) A zigzag line
d) A rectangle
Answer: a
Questions: 2
What is the combination of two or more electric cells called?
a) Circuit
b) Battery
c) Fuse
d) Electromagnet
Answer: b
Questions: 3
What happens to the bulb when the switch is in the ‘ON’ position in an electric circuit?
a) It remains off
b) It glows
c) It flickers
d) It heats up
Answer: b
Questions: 4
Which device is used to measure electric current in a circuit?
a) Voltmeter
b) Ammeter
c) Thermometer
d) Barometer
Answer: b
Questions: 5
What happens when a large current passes through a wire?
a) The wire becomes cold
b) The wire may melt and break
c) The wire glows
d) The wire turns green
Answer: b
Questions: 6
What is the function of a fuse in an electric circuit?
a) To increase current flow
b) To decrease voltage
c) To prevent overheating and fires
d) To light up bulbs
Answer: c
Questions: 7
What does a compass needle do when placed near a current-carrying wire?
a) It points north
b) It deflects
c) It becomes hot
d) It glows
Answer: b
Questions: 8
What is a current-carrying coil of insulated wire wrapped around a piece of iron called?
a) Battery
b) Circuit
c) Electromagnet
d) Transformer
Answer: c
Questions: 9
What effect does electric current have when it flows through a wire?
a) Cooling effect
b) Heating effect
c) Magnetic effect
d) Both heating and magnetic effects
Answer: d
Questions: 10
Which device is used to separate magnetic materials from junk?
a) Battery
b) Electromagnet
c) Thermometer
d) Barometer
Answer: b
Questions: 11
What is the primary component inside an electric bell that makes it work?
a) Battery
b) Bulb
c) Electromagnet
d) Fuse
Answer: c
Questions: 12
What is the name of the wire inside a bulb that glows when current passes through it?
a) Coil
b) Filament
c) Electrode
d) Insulator
Answer: b
Questions: 13
What is used to represent various electric components in a circuit diagram?
a) Pictures
b) Symbols
c) Words
d) Numbers
Answer: b
Questions: 14
What is the role of the element in an electric heater?
a) To cool the device
b) To produce heat
c) To produce light
d) To store energy
Answer: b
Questions: 15
Which type of appliance uses an electromagnet to function?
a) Electric fan
b) Electric bell
c) Electric bulb
d) Electric stove
Answer: b
Questions: 16
Which effect of electric current is utilized in an electric room heater?
a) Cooling effect
b) Heating effect
c) Magnetic effect
d) Luminescent effect
Answer: b
Questions: 17
How is the positive terminal of an electric cell represented in a symbol?
a) Longer line
b) Shorter line
c) Circle
d) Triangle
Answer: a
Questions: 18
What does the heating effect of electric current depend on?
a) Material, length, and thickness of the wire
b) Speed of the current
c) Type of battery used
d) Temperature of the surroundings
Answer: a
Questions: 19
What device is increasingly used in place of fuses in modern electrical systems?
a) Voltmeter
b) Ammeter
c) Miniature Circuit Breakers (MCBs)
d) Thermometer
Answer: c
Questions: 20
What happens to the electromagnet when the current is switched off?
a) It becomes a permanent magnet
b) It loses its magnetism
c) It heats up
d) It produces light
Answer: b
Questions: 21
What is the purpose of using a cell holder in a circuit?
a) To increase voltage
b) To hold and connect cells properly
c) To measure current
d) To decrease current flow
Answer: b
Questions: 22
What happens if the current through a fuse exceeds a certain limit?
a) The fuse wire glows
b) The fuse wire melts and breaks
c) The fuse wire cools down
d) The fuse wire gets longer
Answer: b
Questions: 23
What is used to represent the ‘ON’ position of a switch in a circuit diagram?
a) Circle
b) Line
c) Square
d) Dot
Answer: b
Questions: 24
Which electric component is symbolized by a longer line and a shorter but thicker parallel line?
a) Battery
b) Electric bulb
c) Electric cell
d) Switch
Answer: c
Questions: 25
Why is it dangerous to touch a lighted electric bulb connected to the mains?
a) It is very cold
b) It may give an electric shock
c) It may be very hot
d) It may break easily
Answer: c
Questions: 26
What material is commonly used in the element of an electric heater?
a) Copper
b) Nichrome
c) Aluminum
d) Steel
Answer: b
Questions: 27
What does ISI mark on an electrical appliance indicate?
a) High price
b) Safe and energy-efficient
c) Imported product
d) Low quality
Answer: b
Questions: 28
What is the unit used to measure electric current?
a) Volt
b) Ohm
c) Ampere
d) Watt
Answer: c
Questions: 29
What happens to the compass needle when electric current flows through a nearby wire?
a) It remains stationary
b) It glows
c) It deflects
d) It breaks
Answer: c
Questions: 30
What type of current is used in household electric circuits?
a) Direct current
b) Alternating current
c) Pulsating current
d) Static current
Answer: b
Class 7 Science Chapter 14 Summary – Electric Current and Its Effects
Electric Current and Electric Circuits
- Electric current is the flow of electrons through a conductor like a wire
- A continuous conducting path between the terminals of a cell or battery along which current flows is called an electric circuit
- Electric circuits can be open (switch off) or closed (switch on)
- Circuit diagrams use symbols to represent components like wires, switches, bulbs, cells, batteries
Heating Effect of Electric Current
- When current flows through a wire, it gets heated up due to the heating effect of electric current
- The heat produced depends on the material, length and thickness of the wire
- Many appliances like electric iron, heater, stove, geyser work on this heating effect
- Electric fuses prevent damage to circuits by melting and breaking when excess current flows
Magnetic Effect of Electric Current
- When current flows through a wire, it creates a magnetic field around the wire
- This magnetic effect was discovered by Hans Christian Oersted
- An electromagnet is a coil of wire wound around a soft iron core that behaves like a magnet when current flows
- Electromagnets are used in electric bells, toys, junk separators and telecommunication equipment
Electric Bell
- An electric bell contains an electromagnet that attracts an iron strip with a hammer when current flows
- The hammer hits a gong to produce sound
- As the strip moves away, the circuit breaks and the electromagnet loses its magnetism
- The strip falls back, completing the circuit again, and the cycle repeats to produce a continuous ringing
Benefits of Electric Current and Its Effects Class 7 MCQ
Learning about electric current and its effects is very important for students. It helps them understand how electricity works and its uses in daily life. The Electric Current and Its Effects Class 7 MCQ is a great way to test knowledge and prepare for exams. Here are some benefits of solving MCQs on this topic:
- Quick Revision – MCQs help in revising key concepts like electric circuits, heating effects, and magnetic effects.
- Exam Preparation – Practicing MCQ on Electric Current and Its Effects Class 7 with Answers PDF helps students gain confidence before tests.
- Better Understanding – By solving Electric Current and Its Effects Class 7 Questions with Answers, students can clear their doubts and strengthen their concepts.
- Time-Saving – Multiple-choice questions allow students to quickly recall answers, improving their problem-solving speed.
- Aligned with Syllabus – These MCQs follow the NCERT Solutions for Class 7 Science and CBSE Class 7 Science Syllabus, ensuring complete learning.
Advantages of Electric Current and Its Effects Class 7 MCQ
Understanding electric current and its effects is useful in everyday life. It helps students learn how electrical devices work and the importance of safety. Solving Electric Current and Its Effects Class 7 MCQ has many advantages:
- Concept Clarity – MCQs provide a clear understanding of electric circuits, fuses, and switches.
- Memory Boost – Solving MCQ on Electric Current and Its Effects Class 7 with Answers PDF helps students remember important points easily.
- Self-Assessment – By attempting Electric Current and Its Effects Class 7 Questions with Answers, students can check their knowledge and improve weak areas.
- Fun Learning – MCQs make learning interactive and enjoyable.
- Exam Readiness – These MCQs follow the NCERT Solutions for Class 7 Science and CBSE Class 7 Science Syllabus, making them ideal for school exams.
MCQs Electric Current and Its Effects Class 7 FAQs
What is the importance of solving Electric Current and Its Effects Class 7 MCQ?
Solving Electric Current and Its Effects Class 7 MCQ helps students revise key concepts, improve problem-solving skills, and prepare for exams effectively.
Where can I find MCQ on Electric Current and Its Effects Class 7 with Answers PDF?
You can find MCQ on Electric Current and Its Effects Class 7 with Answers PDF on educational platforms like Infinity Learn, which provide well-structured study materials.
How do MCQs help in understanding Electric Current and Its Effects Class 7?
MCQs make learning interactive, test knowledge, and help students quickly recall important topics like electric circuits, heating effects, and magnetic effects of electric current.
Are the Electric Current and Its Effects Class 7 Questions with Answers based on the NCERT syllabus?
Yes, these MCQs follow the NCERT Solutions for Class 7 Science and the CBSE Class 7 Science Syllabus, ensuring complete and accurate learning.
Why should students practice Electric Current and Its Effects Class 7 MCQ before exams?
Practicing MCQs Questions helps students identify weak areas, improve time management, and gain confidence in answering multiple-choice questions in exams.
