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

362976 A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance ' \(r\) ' carrying a current \(i\). The resistance of voltmeter is \(R\). For more correct measurement of potential difference

1 \(R = r\)
2 \(R>>r\)
3 \(R < < r\)
4 \(R = 0\)
PHXII04:MOVING CHARGES AND MAGNETISM

362977 For designing a voltmeter of range \(50\;V\) and an ammeter of range \(10\;mA\) using a galvanometer which has a coil of resistance \(54 \Omega\) showing a full scale deflection for \(1\;mA\) as in figure.
supporting img
(A) For voltmeter \(R \approx 50k\Omega \)
(B) For ammeter \(r \approx 0.2\Omega \)
(C) For ammeter \(r = 6\Omega \)
(D) For voltmeter \(R \approx 5k\Omega \)
(E) For voltmeter \(R \approx 500\Omega \)
Choose the correct answer from the options given below.

1 (C) and (D)
2 (A) and (B)
3 (C) and (E)
4 (A) and (C)
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362978 A voltmeter of range \(2\,\;V\) and resistance \(300 \Omega\) cannot be converted into ammeter of range

1 \(1\;\,A\)
2 \(1\;\,mA\)
3 \(100\,\;mA\)
4 \(10\,\;mA\)
PHXII04:MOVING CHARGES AND MAGNETISM

362979 The coil of galvanometer consists of 100 turns and effective area of 1 square \(cm\). The restoring couple is \({10^{ - 8}}\;N - m{\rm{/}}rad\). The magnetic field between the pole pieces is \(5\,T\). The current sensitivity of this galvanometer will be

1 \(5 \times {10^4}\,rad{\rm{/}}\mu A\)
2 \(5 \times {10^ - }^6\,rad{\rm{/}}\mu A\)
3 \(5 \times {10^ - }^7\,rad{\rm{/}}\mu A\)
4 \(5\,{\mkern 1mu} rad{\rm{/}}\mu A\)
PHXII04:MOVING CHARGES AND MAGNETISM

362980 The radial magnetic field is used in a suspended coil galvanometer to provide

1 a uniform torque on the coil
2 maximum torque on the coil in all positions
3 a uniform and maximum torque in all positions of the coil
4 a non uniform torque on the coil
Join With Us for More Updates
PHXII04:MOVING CHARGES AND MAGNETISM

362976 A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance ' \(r\) ' carrying a current \(i\). The resistance of voltmeter is \(R\). For more correct measurement of potential difference

1 \(R = r\)
2 \(R>>r\)
3 \(R < < r\)
4 \(R = 0\)
PHXII04:MOVING CHARGES AND MAGNETISM

362977 For designing a voltmeter of range \(50\;V\) and an ammeter of range \(10\;mA\) using a galvanometer which has a coil of resistance \(54 \Omega\) showing a full scale deflection for \(1\;mA\) as in figure.
supporting img
(A) For voltmeter \(R \approx 50k\Omega \)
(B) For ammeter \(r \approx 0.2\Omega \)
(C) For ammeter \(r = 6\Omega \)
(D) For voltmeter \(R \approx 5k\Omega \)
(E) For voltmeter \(R \approx 500\Omega \)
Choose the correct answer from the options given below.

1 (C) and (D)
2 (A) and (B)
3 (C) and (E)
4 (A) and (C)
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362978 A voltmeter of range \(2\,\;V\) and resistance \(300 \Omega\) cannot be converted into ammeter of range

1 \(1\;\,A\)
2 \(1\;\,mA\)
3 \(100\,\;mA\)
4 \(10\,\;mA\)
PHXII04:MOVING CHARGES AND MAGNETISM

362979 The coil of galvanometer consists of 100 turns and effective area of 1 square \(cm\). The restoring couple is \({10^{ - 8}}\;N - m{\rm{/}}rad\). The magnetic field between the pole pieces is \(5\,T\). The current sensitivity of this galvanometer will be

1 \(5 \times {10^4}\,rad{\rm{/}}\mu A\)
2 \(5 \times {10^ - }^6\,rad{\rm{/}}\mu A\)
3 \(5 \times {10^ - }^7\,rad{\rm{/}}\mu A\)
4 \(5\,{\mkern 1mu} rad{\rm{/}}\mu A\)
PHXII04:MOVING CHARGES AND MAGNETISM

362980 The radial magnetic field is used in a suspended coil galvanometer to provide

1 a uniform torque on the coil
2 maximum torque on the coil in all positions
3 a uniform and maximum torque in all positions of the coil
4 a non uniform torque on the coil
For More Updates join with Us
PHXII04:MOVING CHARGES AND MAGNETISM

362976 A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance ' \(r\) ' carrying a current \(i\). The resistance of voltmeter is \(R\). For more correct measurement of potential difference

1 \(R = r\)
2 \(R>>r\)
3 \(R < < r\)
4 \(R = 0\)
PHXII04:MOVING CHARGES AND MAGNETISM

362977 For designing a voltmeter of range \(50\;V\) and an ammeter of range \(10\;mA\) using a galvanometer which has a coil of resistance \(54 \Omega\) showing a full scale deflection for \(1\;mA\) as in figure.
supporting img
(A) For voltmeter \(R \approx 50k\Omega \)
(B) For ammeter \(r \approx 0.2\Omega \)
(C) For ammeter \(r = 6\Omega \)
(D) For voltmeter \(R \approx 5k\Omega \)
(E) For voltmeter \(R \approx 500\Omega \)
Choose the correct answer from the options given below.

1 (C) and (D)
2 (A) and (B)
3 (C) and (E)
4 (A) and (C)
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362978 A voltmeter of range \(2\,\;V\) and resistance \(300 \Omega\) cannot be converted into ammeter of range

1 \(1\;\,A\)
2 \(1\;\,mA\)
3 \(100\,\;mA\)
4 \(10\,\;mA\)
PHXII04:MOVING CHARGES AND MAGNETISM

362979 The coil of galvanometer consists of 100 turns and effective area of 1 square \(cm\). The restoring couple is \({10^{ - 8}}\;N - m{\rm{/}}rad\). The magnetic field between the pole pieces is \(5\,T\). The current sensitivity of this galvanometer will be

1 \(5 \times {10^4}\,rad{\rm{/}}\mu A\)
2 \(5 \times {10^ - }^6\,rad{\rm{/}}\mu A\)
3 \(5 \times {10^ - }^7\,rad{\rm{/}}\mu A\)
4 \(5\,{\mkern 1mu} rad{\rm{/}}\mu A\)
PHXII04:MOVING CHARGES AND MAGNETISM

362980 The radial magnetic field is used in a suspended coil galvanometer to provide

1 a uniform torque on the coil
2 maximum torque on the coil in all positions
3 a uniform and maximum torque in all positions of the coil
4 a non uniform torque on the coil
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PHXII04:MOVING CHARGES AND MAGNETISM

362976 A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance ' \(r\) ' carrying a current \(i\). The resistance of voltmeter is \(R\). For more correct measurement of potential difference

1 \(R = r\)
2 \(R>>r\)
3 \(R < < r\)
4 \(R = 0\)
PHXII04:MOVING CHARGES AND MAGNETISM

362977 For designing a voltmeter of range \(50\;V\) and an ammeter of range \(10\;mA\) using a galvanometer which has a coil of resistance \(54 \Omega\) showing a full scale deflection for \(1\;mA\) as in figure.
supporting img
(A) For voltmeter \(R \approx 50k\Omega \)
(B) For ammeter \(r \approx 0.2\Omega \)
(C) For ammeter \(r = 6\Omega \)
(D) For voltmeter \(R \approx 5k\Omega \)
(E) For voltmeter \(R \approx 500\Omega \)
Choose the correct answer from the options given below.

1 (C) and (D)
2 (A) and (B)
3 (C) and (E)
4 (A) and (C)
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362978 A voltmeter of range \(2\,\;V\) and resistance \(300 \Omega\) cannot be converted into ammeter of range

1 \(1\;\,A\)
2 \(1\;\,mA\)
3 \(100\,\;mA\)
4 \(10\,\;mA\)
PHXII04:MOVING CHARGES AND MAGNETISM

362979 The coil of galvanometer consists of 100 turns and effective area of 1 square \(cm\). The restoring couple is \({10^{ - 8}}\;N - m{\rm{/}}rad\). The magnetic field between the pole pieces is \(5\,T\). The current sensitivity of this galvanometer will be

1 \(5 \times {10^4}\,rad{\rm{/}}\mu A\)
2 \(5 \times {10^ - }^6\,rad{\rm{/}}\mu A\)
3 \(5 \times {10^ - }^7\,rad{\rm{/}}\mu A\)
4 \(5\,{\mkern 1mu} rad{\rm{/}}\mu A\)
PHXII04:MOVING CHARGES AND MAGNETISM

362980 The radial magnetic field is used in a suspended coil galvanometer to provide

1 a uniform torque on the coil
2 maximum torque on the coil in all positions
3 a uniform and maximum torque in all positions of the coil
4 a non uniform torque on the coil
Join With Us for More Updates
PHXII04:MOVING CHARGES AND MAGNETISM

362976 A moving coil voltmeter is generally used to measure the potential difference across a conductor of resistance ' \(r\) ' carrying a current \(i\). The resistance of voltmeter is \(R\). For more correct measurement of potential difference

1 \(R = r\)
2 \(R>>r\)
3 \(R < < r\)
4 \(R = 0\)
PHXII04:MOVING CHARGES AND MAGNETISM

362977 For designing a voltmeter of range \(50\;V\) and an ammeter of range \(10\;mA\) using a galvanometer which has a coil of resistance \(54 \Omega\) showing a full scale deflection for \(1\;mA\) as in figure.
supporting img
(A) For voltmeter \(R \approx 50k\Omega \)
(B) For ammeter \(r \approx 0.2\Omega \)
(C) For ammeter \(r = 6\Omega \)
(D) For voltmeter \(R \approx 5k\Omega \)
(E) For voltmeter \(R \approx 500\Omega \)
Choose the correct answer from the options given below.

1 (C) and (D)
2 (A) and (B)
3 (C) and (E)
4 (A) and (C)
JEE - 2023
PHXII04:MOVING CHARGES AND MAGNETISM

362978 A voltmeter of range \(2\,\;V\) and resistance \(300 \Omega\) cannot be converted into ammeter of range

1 \(1\;\,A\)
2 \(1\;\,mA\)
3 \(100\,\;mA\)
4 \(10\,\;mA\)
PHXII04:MOVING CHARGES AND MAGNETISM

362979 The coil of galvanometer consists of 100 turns and effective area of 1 square \(cm\). The restoring couple is \({10^{ - 8}}\;N - m{\rm{/}}rad\). The magnetic field between the pole pieces is \(5\,T\). The current sensitivity of this galvanometer will be

1 \(5 \times {10^4}\,rad{\rm{/}}\mu A\)
2 \(5 \times {10^ - }^6\,rad{\rm{/}}\mu A\)
3 \(5 \times {10^ - }^7\,rad{\rm{/}}\mu A\)
4 \(5\,{\mkern 1mu} rad{\rm{/}}\mu A\)
PHXII04:MOVING CHARGES AND MAGNETISM

362980 The radial magnetic field is used in a suspended coil galvanometer to provide

1 a uniform torque on the coil
2 maximum torque on the coil in all positions
3 a uniform and maximum torque in all positions of the coil
4 a non uniform torque on the coil