An electric iron has a rating of 750 W, 220 V. Calculate the (i) current flowing through it, and (ii) its resistance when in use.
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Explanation:
Answer. Given: P = 750 W, V = 220 V
(i) P = VI
=750=220*I
I=750/220=3.40
ii)P=V^2/R
=R=V^2/P
=220^2/750
=64.53 OHM
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