Physics for IGCSE & O level - Electricity (Section 4 - No. 35)

What is the voltage across a resistor if the current through it is 2 Amperes, and the resistance is 10 Ohms?
5V
12V
20V
8V

Explanation

Using Ohm's Law (V = I * R), V = 2A * 10 Ohms = 20V

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