Question

Can you have an AC series circuit in which there is a phase difference of (a) 180° (b) 120° between the emf and the current?

Answer 1

No, a phase difference of 180º between applied voltage and current is not possible in a standard LCR circuit. However, for reference, it is possible to construct electronic circuits that mimic negative resistance or negative impedance. In the case of negative resistance, R=−VI.

Answer 2

Answer:

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