The maximum power dissipated by a 100Ω resistor in a circuit is 4W. Calculate the...
PHYSICS
WAEC 2003
The maximum power dissipated by a 100Ω resistor in a circuit is 4W. Calculate the voltage across the resistor
- A. 10V
- B. 20V
- C. 25V
- D. 400V
Correct Answer: B. 20V
Explanation
\(V^2 = PR = V = \sqrt{4} \times 100\)
= 20V
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