An electric iron draws a current of 3.4 A from the 220 V supply line. What will be current drawn when it is connected to 110 V?
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Hi there,
The basic formula to keeping mind is the formula of resistance, that is,
or in accordance to this problem,
we know that r is common.
so r = 220/3.4
when v = 110, I will be,
v/r = I
= 110/220/3.4
= 1.7A
The basic formula to keeping mind is the formula of resistance, that is,
or in accordance to this problem,
we know that r is common.
so r = 220/3.4
when v = 110, I will be,
v/r = I
= 110/220/3.4
= 1.7A
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