EASY
10th CBSE
IMPORTANT
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The essential difference between an AC generator and a DC generator is that:
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Important Questions on Magnetic Effect of Electric Current
EASY
10th CBSE
IMPORTANT
When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right.
If S is kept closed, the pointer will:
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10th CBSE
IMPORTANT
Each one of the following changes will increase emf (or voltage) in a simple generator except:
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10th CBSE
IMPORTANT
The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was:
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10th CBSE
IMPORTANT
An electric generator converts:
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10th CBSE
IMPORTANT
A d.c. generator is based on the principle of:
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10th CBSE
IMPORTANT
An induced current is produced when a magnet is moved into a coil. The magnitude of induced current does not depend on:
EASY
10th CBSE
IMPORTANT
The frequency of direct current (d.c.) is:
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10th CBSE
IMPORTANT
The frequency of alternating current (a.c.) supply in India is:
