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Q 1.
When electric current is passing through wire, it behaves like a magnet. This is the?
Ans.
Magnetic effect of current.
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Q 2.
Would any of the bulb glow when the switch is in the OFF position?
Ans.
No.
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Q 3.
An electric bell contains?
Ans.
Electromagnet.
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Q 4.
What will be the order in which the bulbs A, B and C will glow when the switch is moved to the ON position?
Ans.
All will glow simultaneously.
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Q 5.
When current is switched "ON" in a room heater, it?
Ans.
Becomes red hot and emits heat.
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Q 6.
Longer line in the symbol for a cell represents its?
Ans.
Positive terminals.
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Q 7.
Full form of CFLs?
Ans.
Compact Fluorescent lamps.
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Q 8.
When the bulb gets fused, it's?
Ans.
Filament is broken.
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Q 9.
Name the thin wire in bulb?
Ans.
Thin wire called Filament.
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Q 10.
Combination of two or more cells is called?
Ans.
Battery.
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Q 11.
Full for.of MCB.
Ans.
Miniature Circuit Breaker.
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Q 12.
Full form of LED?
Ans.
Light emitting diode.
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Q 13.
The safety device based on the heating effects of electric current is called?
Ans.
Fuse.
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Q 14.
Name the scientist who discovered magnetic effect of electric current?
Ans.
Hans Christian Oersted.
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Q 15.
Name the scientist who discovered electric bulb?
Ans.
Thomas Alva Edison.
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