EASY
12th CBSE
IMPORTANT
Earn 100

A galvanometer has a resistance of 96 Ω and it is desired to pass 4% of the total current through it. Calculate the value of shunt resistance.

Important Questions on Magnetic Effect of Current

EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 2
A galvanometer has a resistance of 50 Ω. A resistance of 5 Ω is connected across its terminals. What part of the total current will flow through the galvanometer?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 3
How will you convert 1 mA full scale deflection galvanometer of resistance 100 ohms into an ammeter to read 1 A (full scale deflection) and into a voltmeter to read 1 volt (full scale deflection).
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 4
A moving coil galvanometer of resistance 10 Ω produces full scale deflection, when a current of 25 mA is passed through it. Describe showing full calculations, how will you convert the galvanometer into (i) a voltmeter reading up to 120 V and (ii) an ammeter reading up to 20 A.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 5
A galvanometer of resistance 20 Ω gives a deflection of one division when a potential difference of 4 mV is applied across its terminals. Calculate the resistance of the shunt if the current of 10 A is to be measured by it. The galvanometer has 25 divisions.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 6
A galvanometer of resistance 40 Ω gives a deflection of 5 divisions per mA. There are 50 divisions on the scale. Calculate the maximum current that can pass through it when a shunt resistance of 2 Ω is connected.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 7
It is intended to measure a maximum current of 25 A with an ammeter of range 2.5 A and resistance 0.9 Ω. How will you do it? What will be the combined resistance?
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 8
A galvanometer has a resistance of 100 Ω. A difference of potential of 1.0 V between its terminals gives a full-scale deflection. Calculate the shunt resistance which will enable the instrument to read up to 2 A.
EASY
12th CBSE
IMPORTANT
New Simplified Physics (Vol 1) For Class 12>Chapter 4 - Magnetic Effect of Current>Problems For Practice>Q 9
A resistance of 900 Ω is connected in series with a galvanometer of resistance 100 Ω. A potential difference of 1 V produces a deflection of 100 divisions in the galvanometer. Find the figure of merit of the galvanometer.