Question

A electric iron draws a current of 3.4ampere from 220 volt supply line what current will this electric iron draw when connected to 110 volt supply line

Answer 1

Answer:

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Answer 2

Answer:

1.7A

Explanation

V ∝ I

Therefore is V is reduced to half current also reduces to half

hence if the voltage is 110 then current is 1.7A

or you can use the formula

R= V/I

R= 220/3.4=64.7Ω(approx)

now if V is 110 then current will be

I= V/R

I= 110/64.7=1.7Ω(approx)