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.
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?
Share
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/