Physicsmedium · Past Paper
Calculate the resistance of a lamp that draws 0.5 A current from a 220 V source.
A110 Ohms
B220 Ohms
C440 Ohms
D550 Ohms
✓ Correct Answer: C — 440 Ohms
Using R = V / I: R = 220 / 0.5 = 440 Ohms.
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