Questions
A voltmeter with a resistance of 50 x103 ohm is used to measure voltage in a circuit. To increase its range to 3 times, the additional resistance to be put in series is
detailed solution
Correct option is A
R=V′ig−G=nVV/R0−R0where Ro is the resistance of voltmeter∴ R=nR0−R0=(n−1)R0=(3−1)×50×103=100×103=105ΩTalk to our academic expert!
Similar Questions
A tangent galvanometer has a coil with 50 turns and radius equal to 4 cm. A current of 0.1 amp is passing through it. The plane of the coil is set parallel to the earth's magnetic meridian. If the value of the earth's horizontal component of the magnetic field is 7x 10-5 Tesla and weber/amp' x metre, then the deflection in the galvanometer needle will be
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
