154221
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to
1 increase space for rotation of coil
2 produce magnetic field which is parallel to plane of coil at any position
3 reduce weight of galvanometer
4 make magnetic induction weak at the centre
Explanation:
B The moving coil galvanometer moves in a magnetic field. It is produced by a permanent magnet. The magnet is perpendicular to the magnetic field when current passes through a coil, the magnet experiences equal and opposite force. The magnetic field produced by the concave shaped pole is always radial magnetic field. The radial magnetic field is that field, in which the plane of the coil in all position is parallel to the direction of magnetic field.
MHT-CET 2019
Magnetism and Matter
154227
Galvanometer can be converted into ammeter by
1 Low resistance called shunt resistance in parallel to the galvanometer
2 Very large resistance in parallel to the galvanometer
3 Series connection with a very small resistance
4 series connection with a very high resistance
Explanation:
A An ammeter is always connected in series to a circuit. When galvanometer into an ammeter a very low value resistance is to be connected in parallel to it, called shunt.
J and K CET-2018
Magnetism and Matter
154231
Van de Graaff generator produces
1 low voltage and high current
2 low voltage and low current
3 high voltage and high current
4 high voltage and low current
Explanation:
D A Van de Graaff generators produce high voltage and low current, because Van de Graaff generator is an electrostatic generator that creates very high electric potential. At low current levels, it produce very high voltage direct current.
Magnetism and Matter
154235
Vibration magnetometer works on the principle of
1 torque acting on the bar magnet
2 force acting on the bar magnet
3 Both the force and the torque acting on the bar magnet
4 None of the above
Explanation:
A When the bar magnet in the deflection magnetometer is displaced, a torque acts on it due to the horizontal earth's magnetic field, so the magnet vibrates and alligns parallel to the earth's magnetic field.
CG PET- 2007
Magnetism and Matter
154253
Sensitivity of a moving coil galvanometer can be increased by
1 decreasing the number of turns of coil
2 increasing the number of turns of coil
3 decreasing the area of a coil
4 by using a weak magnet
Explanation:
B Sensitivity of galvanometer increase when number of turns, area of coil and magnetic field increase. $\mathrm{S}=\frac{\theta}{\mathrm{i}}=\frac{\mathrm{NAB}}{\mathrm{k}}$
154221
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to
1 increase space for rotation of coil
2 produce magnetic field which is parallel to plane of coil at any position
3 reduce weight of galvanometer
4 make magnetic induction weak at the centre
Explanation:
B The moving coil galvanometer moves in a magnetic field. It is produced by a permanent magnet. The magnet is perpendicular to the magnetic field when current passes through a coil, the magnet experiences equal and opposite force. The magnetic field produced by the concave shaped pole is always radial magnetic field. The radial magnetic field is that field, in which the plane of the coil in all position is parallel to the direction of magnetic field.
MHT-CET 2019
Magnetism and Matter
154227
Galvanometer can be converted into ammeter by
1 Low resistance called shunt resistance in parallel to the galvanometer
2 Very large resistance in parallel to the galvanometer
3 Series connection with a very small resistance
4 series connection with a very high resistance
Explanation:
A An ammeter is always connected in series to a circuit. When galvanometer into an ammeter a very low value resistance is to be connected in parallel to it, called shunt.
J and K CET-2018
Magnetism and Matter
154231
Van de Graaff generator produces
1 low voltage and high current
2 low voltage and low current
3 high voltage and high current
4 high voltage and low current
Explanation:
D A Van de Graaff generators produce high voltage and low current, because Van de Graaff generator is an electrostatic generator that creates very high electric potential. At low current levels, it produce very high voltage direct current.
Magnetism and Matter
154235
Vibration magnetometer works on the principle of
1 torque acting on the bar magnet
2 force acting on the bar magnet
3 Both the force and the torque acting on the bar magnet
4 None of the above
Explanation:
A When the bar magnet in the deflection magnetometer is displaced, a torque acts on it due to the horizontal earth's magnetic field, so the magnet vibrates and alligns parallel to the earth's magnetic field.
CG PET- 2007
Magnetism and Matter
154253
Sensitivity of a moving coil galvanometer can be increased by
1 decreasing the number of turns of coil
2 increasing the number of turns of coil
3 decreasing the area of a coil
4 by using a weak magnet
Explanation:
B Sensitivity of galvanometer increase when number of turns, area of coil and magnetic field increase. $\mathrm{S}=\frac{\theta}{\mathrm{i}}=\frac{\mathrm{NAB}}{\mathrm{k}}$
154221
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to
1 increase space for rotation of coil
2 produce magnetic field which is parallel to plane of coil at any position
3 reduce weight of galvanometer
4 make magnetic induction weak at the centre
Explanation:
B The moving coil galvanometer moves in a magnetic field. It is produced by a permanent magnet. The magnet is perpendicular to the magnetic field when current passes through a coil, the magnet experiences equal and opposite force. The magnetic field produced by the concave shaped pole is always radial magnetic field. The radial magnetic field is that field, in which the plane of the coil in all position is parallel to the direction of magnetic field.
MHT-CET 2019
Magnetism and Matter
154227
Galvanometer can be converted into ammeter by
1 Low resistance called shunt resistance in parallel to the galvanometer
2 Very large resistance in parallel to the galvanometer
3 Series connection with a very small resistance
4 series connection with a very high resistance
Explanation:
A An ammeter is always connected in series to a circuit. When galvanometer into an ammeter a very low value resistance is to be connected in parallel to it, called shunt.
J and K CET-2018
Magnetism and Matter
154231
Van de Graaff generator produces
1 low voltage and high current
2 low voltage and low current
3 high voltage and high current
4 high voltage and low current
Explanation:
D A Van de Graaff generators produce high voltage and low current, because Van de Graaff generator is an electrostatic generator that creates very high electric potential. At low current levels, it produce very high voltage direct current.
Magnetism and Matter
154235
Vibration magnetometer works on the principle of
1 torque acting on the bar magnet
2 force acting on the bar magnet
3 Both the force and the torque acting on the bar magnet
4 None of the above
Explanation:
A When the bar magnet in the deflection magnetometer is displaced, a torque acts on it due to the horizontal earth's magnetic field, so the magnet vibrates and alligns parallel to the earth's magnetic field.
CG PET- 2007
Magnetism and Matter
154253
Sensitivity of a moving coil galvanometer can be increased by
1 decreasing the number of turns of coil
2 increasing the number of turns of coil
3 decreasing the area of a coil
4 by using a weak magnet
Explanation:
B Sensitivity of galvanometer increase when number of turns, area of coil and magnetic field increase. $\mathrm{S}=\frac{\theta}{\mathrm{i}}=\frac{\mathrm{NAB}}{\mathrm{k}}$
NEET Test Series from KOTA - 10 Papers In MS WORD
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Magnetism and Matter
154221
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to
1 increase space for rotation of coil
2 produce magnetic field which is parallel to plane of coil at any position
3 reduce weight of galvanometer
4 make magnetic induction weak at the centre
Explanation:
B The moving coil galvanometer moves in a magnetic field. It is produced by a permanent magnet. The magnet is perpendicular to the magnetic field when current passes through a coil, the magnet experiences equal and opposite force. The magnetic field produced by the concave shaped pole is always radial magnetic field. The radial magnetic field is that field, in which the plane of the coil in all position is parallel to the direction of magnetic field.
MHT-CET 2019
Magnetism and Matter
154227
Galvanometer can be converted into ammeter by
1 Low resistance called shunt resistance in parallel to the galvanometer
2 Very large resistance in parallel to the galvanometer
3 Series connection with a very small resistance
4 series connection with a very high resistance
Explanation:
A An ammeter is always connected in series to a circuit. When galvanometer into an ammeter a very low value resistance is to be connected in parallel to it, called shunt.
J and K CET-2018
Magnetism and Matter
154231
Van de Graaff generator produces
1 low voltage and high current
2 low voltage and low current
3 high voltage and high current
4 high voltage and low current
Explanation:
D A Van de Graaff generators produce high voltage and low current, because Van de Graaff generator is an electrostatic generator that creates very high electric potential. At low current levels, it produce very high voltage direct current.
Magnetism and Matter
154235
Vibration magnetometer works on the principle of
1 torque acting on the bar magnet
2 force acting on the bar magnet
3 Both the force and the torque acting on the bar magnet
4 None of the above
Explanation:
A When the bar magnet in the deflection magnetometer is displaced, a torque acts on it due to the horizontal earth's magnetic field, so the magnet vibrates and alligns parallel to the earth's magnetic field.
CG PET- 2007
Magnetism and Matter
154253
Sensitivity of a moving coil galvanometer can be increased by
1 decreasing the number of turns of coil
2 increasing the number of turns of coil
3 decreasing the area of a coil
4 by using a weak magnet
Explanation:
B Sensitivity of galvanometer increase when number of turns, area of coil and magnetic field increase. $\mathrm{S}=\frac{\theta}{\mathrm{i}}=\frac{\mathrm{NAB}}{\mathrm{k}}$
154221
In moving coil galvanometer, strong horse shoe magnet of concave shaped pole pieces is used to
1 increase space for rotation of coil
2 produce magnetic field which is parallel to plane of coil at any position
3 reduce weight of galvanometer
4 make magnetic induction weak at the centre
Explanation:
B The moving coil galvanometer moves in a magnetic field. It is produced by a permanent magnet. The magnet is perpendicular to the magnetic field when current passes through a coil, the magnet experiences equal and opposite force. The magnetic field produced by the concave shaped pole is always radial magnetic field. The radial magnetic field is that field, in which the plane of the coil in all position is parallel to the direction of magnetic field.
MHT-CET 2019
Magnetism and Matter
154227
Galvanometer can be converted into ammeter by
1 Low resistance called shunt resistance in parallel to the galvanometer
2 Very large resistance in parallel to the galvanometer
3 Series connection with a very small resistance
4 series connection with a very high resistance
Explanation:
A An ammeter is always connected in series to a circuit. When galvanometer into an ammeter a very low value resistance is to be connected in parallel to it, called shunt.
J and K CET-2018
Magnetism and Matter
154231
Van de Graaff generator produces
1 low voltage and high current
2 low voltage and low current
3 high voltage and high current
4 high voltage and low current
Explanation:
D A Van de Graaff generators produce high voltage and low current, because Van de Graaff generator is an electrostatic generator that creates very high electric potential. At low current levels, it produce very high voltage direct current.
Magnetism and Matter
154235
Vibration magnetometer works on the principle of
1 torque acting on the bar magnet
2 force acting on the bar magnet
3 Both the force and the torque acting on the bar magnet
4 None of the above
Explanation:
A When the bar magnet in the deflection magnetometer is displaced, a torque acts on it due to the horizontal earth's magnetic field, so the magnet vibrates and alligns parallel to the earth's magnetic field.
CG PET- 2007
Magnetism and Matter
154253
Sensitivity of a moving coil galvanometer can be increased by
1 decreasing the number of turns of coil
2 increasing the number of turns of coil
3 decreasing the area of a coil
4 by using a weak magnet
Explanation:
B Sensitivity of galvanometer increase when number of turns, area of coil and magnetic field increase. $\mathrm{S}=\frac{\theta}{\mathrm{i}}=\frac{\mathrm{NAB}}{\mathrm{k}}$