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The maximum power dissipated by a 100\(\Omega\) resistor in a circuit is 4W. Calculate the...

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

= 20V
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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