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Question

A charge of 1×102 C moves at 15 revolutions per second in a circle of radius 40 cm. The current linked with the circuit is


A
0.3 A
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B
0.15 A 
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C
0.6 A 
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D
0.03 A 
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Solution

The correct option is B 0.15 A 

We know that,

I = Qt
Where,
I:Electric Current 
Q:Total Charge 
t:Time 
The charge in the circuit takes 1 s to complete 15 revolutions.

So for 1 revolution, it will take 1/15 s.

I = 1×102115  = 0.15 A


Physics

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