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NEET PHYSICSALTERNATING CURRENTEasy

Question

The maximum power is dissipated for an AC in a/an:

A

resistive circuit

B

LC circuit

C

inductive circuit

D

capacitive circuit

Step-by-Step Solution

According to the sources, the average power dissipated in an AC circuit is given by P=VIcos⁡ϕP = V I \cos \phi, where cos⁡ϕ\cos \phi is the power factor . In a purely resistive circuit, the voltage and current are in phase (phase angle ϕ=0\phi = 0), making the power factor cos⁡0=1\cos 0 = 1. This results in maximum power dissipation, P=VIP = V I . In contrast, for purely inductive or capacitive circuits, the phase difference is π/2\pi/2, meaning cos⁡ϕ=0\cos \phi = 0 and the average power dissipated is zero .

Exam Context & Concepts Covered

This question aligns with the NEET PHYSICS syllabus, specifically targeting concepts from ALTERNATING CURRENT. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

PHYSICSALTERNATING CURRENTmaximumdissipated

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