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Physics for IGCSE & O level - Electricity (Section 4 - No. 21)

If a 120V circuit has a 10-ohm resistor, what current flows through it?
0.83 A
12 A
1200 A
1200 W

解释

Using Ohm's Law: I = V/R = 120V/10 ohms = 12 A.

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