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When starter ...

Question

When starter motor of a car is switched on for $0.8 s, 24 C$ of charge passes through the coil of the motor. The current (A) in the coil is

30

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10

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25

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32

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Solution

The correct option is C $30$
When considering a flow of electric charges, the quantity of charge which passes is given by:
$Q u a n t i t y o f c h a r g e = R a t e o f f l o w o f c h a r g e \times t i m e, i . e . Q = I t$

Hence, current is given as: $I = \frac{Q}{t} = \frac{24}{0.8} = 30 A$

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