A current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at
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(a) 0° to the direction of the field |
(b) 45 ° to the direction of the field |
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(c) 90° to the direction of the field |
(d) 135° to the direction of the field |
(c) 90° to the direction of the field
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Assertion : The whole charge of a conductor cannot be transferred to another isolated conductor.
Reason : The total transfer of charge from one to another is not possible.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is
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(a) 2 |
(b) 4.31 |
(c) 6.28 |
(d) 9.81 |
A 10 pF capacitor is connected to a 50 V battery. How much electrostatic energy is stored in the capacitor
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(a) 1.25 |
(b) 2.5 |
(c) 3.5 |
(d) 4.5 |
The mass of ions deposited during a given interval of time in the process of electrolysis depends on
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(a) The current |
(b) The resistance |
(c) The temperature |
(d) The electric power |
In determining the temperature of a distant star, one makes use of
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(a) Kirchhoff's law |
(b) Stefan's law |
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(c) Wien's displacement law |
(d) None of these |
In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is
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(a) There speed is controlled |
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(b) To keep the centre of gravity of the carrier nearer to the earth |
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(c) To keep the body of the carrier in contact with the earth |
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(d) Nothing should be placed under the carrier |
