An electric iron draws 2.2 A of current from a 220 V source. Find its resistance and power.
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Answer:
I = 2.4 A
V = 240 V
(a) R = V/I (Ohms law)
= 240/2.4
= 100 Ω
(b) Power, P = VI
= 240 × 2.4
= 576 W
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