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

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A. 1Ω
B. 4Ω
C. 5Ω
D. 7Ω
E. 12Ω

Correct Answer:

Option C = 5Ω

Explanation

Z = √R² + x²

Z = √4² + 3²

= 5Ω

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