Question

3) (a) How much work done in moving charge of 360C from a point of 128v to a point of 138 v.
(b) A lamp rated 100w at 220v in circuit what current drawn from the Supply line if the voltage is 220v.



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Answer 1

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$hello \: siso \: your \: answer$

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Ans(a) 30 joules of work

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Ans(b) The current drawn from the supply is 0.45 A.

Explanation:

It is given that,

Power of the lamp, P = 100

W

Voltage, V = 220 V

We know that the power of

electrical appliance is given

by :

P=V\ IP=V I

I is the drawn current from

the supply

I=\dfrac{P}{V}I=VP

I=\dfrac{100\ W}{220\ V}

I=220 V100 W

I=0.45\ AI=0.45 A

Hence, this is the

required solution.

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Hope it's helpful...xd