Moving Coil Galvanometer & Its Applications
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PHXII04:MOVING CHARGES AND MAGNETISM

362942 A galvanometer, having a resistance of \(50 \Omega\) gives a full scale deflection for a current of 0.05 \(A\). The length in meter of a resistance wire of area of cross-section \(2.97 \times {10^{ - 2}}\;c{m^2}\) that can be used to convert the galvanometer into an ammeter which can read a maximim of 5\(A\) current is (specific resistance of the wire is \({5 \times {{10}^{ - 7}}\Omega m}\))

1 1.5
2 9
3 3
4 6
PHXII04:MOVING CHARGES AND MAGNETISM

362943 A galvanometer coil has a resistance of \(10 \Omega\) and the ammeter shows full scale deflection for a current of \(1\,\;mA.\) The shunt resistance required to convert the galvanometer into an ammeter of range \(0 - 100\,\;mA\) is about

1 \(10 \Omega\)
2 \(1 \Omega\)
3 \(0.1 \Omega\)
4 \(0.01 \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362944 A galvanometer having coil resistance \(10\,\Omega \) shows a full scale deflection for a current of \(3\,mA.\) For it to measure a current of \(8 A\), the value of the shunt should be

1 \(4.85 \times 10^{-3} \Omega\)
2 \(3.75 \times 10^{-3} \Omega\)
3 \(2.75 \times 10^{-3} \Omega\)
4 \(3 \times 10^{-3} \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362945 A millivoltmeter of 25\(mV\) range is to be converted into an ammeter of 25\(A\) range. The value (in ohm) of necessary shunt will be

1 1
2 0.01
3 0.05
4 0.001
PHXII04:MOVING CHARGES AND MAGNETISM

362942 A galvanometer, having a resistance of \(50 \Omega\) gives a full scale deflection for a current of 0.05 \(A\). The length in meter of a resistance wire of area of cross-section \(2.97 \times {10^{ - 2}}\;c{m^2}\) that can be used to convert the galvanometer into an ammeter which can read a maximim of 5\(A\) current is (specific resistance of the wire is \({5 \times {{10}^{ - 7}}\Omega m}\))

1 1.5
2 9
3 3
4 6
PHXII04:MOVING CHARGES AND MAGNETISM

362943 A galvanometer coil has a resistance of \(10 \Omega\) and the ammeter shows full scale deflection for a current of \(1\,\;mA.\) The shunt resistance required to convert the galvanometer into an ammeter of range \(0 - 100\,\;mA\) is about

1 \(10 \Omega\)
2 \(1 \Omega\)
3 \(0.1 \Omega\)
4 \(0.01 \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362944 A galvanometer having coil resistance \(10\,\Omega \) shows a full scale deflection for a current of \(3\,mA.\) For it to measure a current of \(8 A\), the value of the shunt should be

1 \(4.85 \times 10^{-3} \Omega\)
2 \(3.75 \times 10^{-3} \Omega\)
3 \(2.75 \times 10^{-3} \Omega\)
4 \(3 \times 10^{-3} \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362945 A millivoltmeter of 25\(mV\) range is to be converted into an ammeter of 25\(A\) range. The value (in ohm) of necessary shunt will be

1 1
2 0.01
3 0.05
4 0.001
PHXII04:MOVING CHARGES AND MAGNETISM

362942 A galvanometer, having a resistance of \(50 \Omega\) gives a full scale deflection for a current of 0.05 \(A\). The length in meter of a resistance wire of area of cross-section \(2.97 \times {10^{ - 2}}\;c{m^2}\) that can be used to convert the galvanometer into an ammeter which can read a maximim of 5\(A\) current is (specific resistance of the wire is \({5 \times {{10}^{ - 7}}\Omega m}\))

1 1.5
2 9
3 3
4 6
PHXII04:MOVING CHARGES AND MAGNETISM

362943 A galvanometer coil has a resistance of \(10 \Omega\) and the ammeter shows full scale deflection for a current of \(1\,\;mA.\) The shunt resistance required to convert the galvanometer into an ammeter of range \(0 - 100\,\;mA\) is about

1 \(10 \Omega\)
2 \(1 \Omega\)
3 \(0.1 \Omega\)
4 \(0.01 \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362944 A galvanometer having coil resistance \(10\,\Omega \) shows a full scale deflection for a current of \(3\,mA.\) For it to measure a current of \(8 A\), the value of the shunt should be

1 \(4.85 \times 10^{-3} \Omega\)
2 \(3.75 \times 10^{-3} \Omega\)
3 \(2.75 \times 10^{-3} \Omega\)
4 \(3 \times 10^{-3} \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362945 A millivoltmeter of 25\(mV\) range is to be converted into an ammeter of 25\(A\) range. The value (in ohm) of necessary shunt will be

1 1
2 0.01
3 0.05
4 0.001
PHXII04:MOVING CHARGES AND MAGNETISM

362942 A galvanometer, having a resistance of \(50 \Omega\) gives a full scale deflection for a current of 0.05 \(A\). The length in meter of a resistance wire of area of cross-section \(2.97 \times {10^{ - 2}}\;c{m^2}\) that can be used to convert the galvanometer into an ammeter which can read a maximim of 5\(A\) current is (specific resistance of the wire is \({5 \times {{10}^{ - 7}}\Omega m}\))

1 1.5
2 9
3 3
4 6
PHXII04:MOVING CHARGES AND MAGNETISM

362943 A galvanometer coil has a resistance of \(10 \Omega\) and the ammeter shows full scale deflection for a current of \(1\,\;mA.\) The shunt resistance required to convert the galvanometer into an ammeter of range \(0 - 100\,\;mA\) is about

1 \(10 \Omega\)
2 \(1 \Omega\)
3 \(0.1 \Omega\)
4 \(0.01 \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362944 A galvanometer having coil resistance \(10\,\Omega \) shows a full scale deflection for a current of \(3\,mA.\) For it to measure a current of \(8 A\), the value of the shunt should be

1 \(4.85 \times 10^{-3} \Omega\)
2 \(3.75 \times 10^{-3} \Omega\)
3 \(2.75 \times 10^{-3} \Omega\)
4 \(3 \times 10^{-3} \Omega\)
PHXII04:MOVING CHARGES AND MAGNETISM

362945 A millivoltmeter of 25\(mV\) range is to be converted into an ammeter of 25\(A\) range. The value (in ohm) of necessary shunt will be

1 1
2 0.01
3 0.05
4 0.001