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A car fuse marked 3A operates optimally on a 12V battery, calculate the resistance of...

Physics
WAEC 2004
A car fuse marked 3A operates optimally on a 12V battery, calculate the resistance of the fuse
  • A. 36.0\(\Omega\)
  • B. 15.0\(\Omega\)
  • C. 9.0\(\Omega\)
  • D. 4.0\(\Omega\)
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Correct Answer: Option D
Explanation
R = \(\frac{v}{I} = \frac{12}{3} = 4\Omega\)
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