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In a series R - C circuit, the resistance of the resistor is 4 Ω...

Physics
WAEC 1993
In a series R - C circuit, the resistance of the resistor is 4 Ω and capacitive reactance is 3 Ω. Calculate the impedance of the circuit
  • A. 1Ω
  • B. 4Ω
  • C. 5Ω
  • D. 7Ω
  • E. 12Ω
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Correct Answer: Option C
Explanation
Z = √R2 + x2

Z = √42 + 32

= 5Ω
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