Question

= 3.75 X 8. An electric iron draws a current of 1 A when voltage is 100 V. Calculate the amount of charge flowing through it in two hours. If voltage is now changed to 400 V, will it make any difference to the current flowing?

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Answer 1

Answer:

Given:-.

I= 1A

V=100V

t= 2 hrs.= 2*60*60 s

Q= ?

CASE=|

Q=It

= 1 * 2*60*60

= 7200 C

CASE=. ||

... V=IR

R= 100V/1A

R= 100 ohm

now....

I = V/R

= 400/100

I= 4 A..

.•. current is increasing 4 times...