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Physics

Physics
The unit of intensity of electric field is

J/c
N/m
Volt
N/c

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Physics
Find the current (in A) when a charge of 1200C flows in 6 seconds.

100
7200
200
3600

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Physics
Water cannot be used to extinguish fire caused by electric current, because

It may spoil the wiring
It may cause electrocution
It may cause electrolysis
It may cause hydrolysis

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Physics
Rear view mirror of car is convex or concave?

Both A & B
Can't be determined
Convex
Concave

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Physics
A good conductor while carrying current is

Positively charged
Alternately charged positive and negative
Negatively charged
Electrically neutral

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Physics
Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

Iron, air and water
Air, water and iron
Water, iron and air
Iron, water and air

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