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Jay Ghosh
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Asked: 2024-12-13T05:47:05+00:00 In:

The instantaneous current and voltage of an a.c. circuit are given by I = 10 sin 314 t A and V = 50 sin (314t + π/2) V. What is the power dissipation in the circuit?

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As voltage is leading the current by π/2 hence power factor cos Ø = 0 and power dissipation in the circuit is zero.
Class 12 Physics Chapter 7 Alternating current Session 2024-2025.

chapter 7 alternating currentclass 12 physicsthe instantaneous current and voltage of the power dissipation in the circuit
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    1 Answer

    1. The power dissipation in the circuit is zero because the voltage leads the current by 2π/2. Hence, the power factor cos ϕ = 0, and since power P = VI cosϕ, no power is dissipated.

      For more visit here:
      https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-7/

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