Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

Two lamps, one rated $100 W$ at $220 V$ and the other $200 W$ at $220 V$ , are connected in parallel to the electric supply at $220 V$ the current drawn by the two lamps is [[1]] $A$ .

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

When two lamps of ratings

100 W

220 V

and

200 W

220 V

are connected in parallel to the electric supply at

220 V

then the current drawn by the two lamps is

1.36 A

.
It is given that two lamps of ratings

100 W

220 V

and

200 W

220 V

are connected in parallel combination with the mains at

220 V

.
Let the lamp with Power,

(P) = 100 W

and potential difference,

V = 220 V

be Lamp

1

.
Let the lamp with Power,
(

P) = 200 W

and potential difference,

V = 220 V

be Lamp

2

.
It is known that the power of the component is given by the relation

P = VI

It can be written as

I = \frac{P}{V}

Where

I, P

and

V

are the current, power and potential difference respectively.
Therefore, the current drawn by lamp

1

\Rightarrow I_{1} = \frac{100}{220}

\Rightarrow I_{1} = \frac{5}{11} A

Similarly, the current drawn by lamp

2

I_{2} = \frac{200}{220}

\Rightarrow I_{2} = \frac{10}{11} A

Therefore, the total current drawn by the two lamps is

I_{1} = I_{1} + I_{2}

\Rightarrow I = \frac{5}{11} + \frac{10}{11}

\Rightarrow I = \frac{15}{11}

\Rightarrow I = 1.36 A

Hence, the current drawn by two lamps is

0.45 A

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!