- The gravitational potential is zero.
- The gravitational field is zero.
- The gravitational potential is same everywhere.
- The gravitational field is same everywhere.
Explanation:
Inside a uniform spherical shell, the gravitational field is the same everywhere and is equal to zero. The gravitational potential has a constant value inside a uniform spherical shell.
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A very long straight wire carries a current I. At the instant when a charge +Q at point P has velocity , as shown, the force on the charge is
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(a) Opposite to OX |
(b) Along OX |
(c) Opposite to OY |
(d) Along OY |

Two electric bulbs, one of 200 volt 40 watt and the other 200 volt 100 watt are connected in a house wiring circuit
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(a) They have equal currents through them |
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(b) The resistance of the filaments in both the bulbs is same |
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(c) The resistance of the filament in 40 watt bulb is more than the resistance in 100 watt bulb |
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(d) The resistance of the filament in 100 watt bulb is more than the resistance in 40 watt bulb |
