Electric Charges And Fields

Physics
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Number of electric lines of force emanating from of positive charge in vacuum is :

A
B
C
D
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When we remove polyester or woollen clothes in dark, we can see a spark and hear a crackling sound. Which of the following is responsible for it?

A
Static electricity.
B
Current electricity.
C
Reflection of light.
D
Refraction of light.
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The ampere-sec stands for the unit of :

A
Power
B
Current
C
Energy
D
Charge
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