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In the circuit given below, the value of ZL for maximum power to be transferred is _____________

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In the circuit given below, the value of ZL for maximum power to be transferred is _____________

(a) R

(b) R + jωL

(c) R – jωL

(d) jωL

This question was posed to me during an online interview.

My enquiry is from Problems Involving Standard Time Functions in division Application of the Laplace Transform in Circuit Analysis of Network Theory

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The correct option is (c) R – jωL

For explanation: The value of load for maximum power transfer is given by the complex conjugate of ZAB

ZAB = R + jXL

= R + jωL

∴ ZL for maximum power transfer is given by ZL = R – jωL.

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