Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsMedium3 minQB

PhysicsMediummultiple choice

In the given a.c. circuit, choose the correct statement(s).

diagram

Answer:

A, C, D

Solution:

R-L branch: $i_{1} = \frac{100}{1 ^{2} + 1 ^{2}} = 502 A$ peak through the resistor - (C) correct.

Phasors: $i_{1} = 50 - 50 j$ , $i_{2} = \frac{100}{2} ∠9 0^{\circ} = 50 j$ , so total $i_{0} = 50 A$ in phase with V.

$Z = V_{0} / i_{0} = 2 Ω$ - (A) correct; power factor $cos 0^{\circ} = 1$ - (B) wrong; $P_{a v} = \frac{1}{2} V_{0} i_{0} = 2500 W$ - (D) correct.

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 3mℹ️ Source: QB

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