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The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and...

Physics
JAMB 1993
The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and 2.0V when supplying a current of 3.0A. The internal resistance of the battery is
  • A. 0.5 \(\Omega\)
  • B. 1.0\(\Omega\)
  • C. 2.0\(\Omega\)
  • D. 4.0\(\Omega\)
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Correct Answer: Option C
Explanation
E = 4 + 2r and E = 2 + 3r

therefore, r = 2\(\Omega\)
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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