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Jay Ghosh

Asked: December 13, 2024In: Class 12 Physics

The instantaneous current and voltage of an a.c. circuit are given by I = 10 sin 300t A and V = 200 sin 300t V. What is the Power dissipation in the curcuit?

It is clear that current and voltage are in same phase, hence, power factor cos Ø = 1. ∴ Power = Vrms Irms = 1/2 VmIm = 1/2 × 200 × 10 = 1000 W. Class 12 Physics Chapter 7 ...

Jay Ghosh

Asked: December 13, 2024In: Class 12 Physics

What is wattless current?

Wattless current is that which does not dissipate power although thre is a flow of current in the circuit. Class 12 Physics Chapter 7 Alternating current Session 2024-2025.

Jay Ghosh

Asked: December 13, 2024In: Class 12 Physics

For an ideal Inductor, connected across a sinusoidal a.c. voltage source, state which one of the following quantity is zero: (i) instantaneous power, (ii) average power over full cycle of the a.c. voltage source.

For an ideal inductor average power over full cycle of the a.c. viltage source is zero. Class 12 Physics Chapter 7 Alternating current Session 2024-2025.

Jay Ghosh

Asked: December 13, 2024In: Class 12 Physics

How much average power, over a complete cycle, does an a.c.source supply to a capacitor?

Zero, because current and voltage differ in phase by π/2 . Class 12 Physics Chapter 7 Alternating current Session 2024-2025.

Jay Ghosh

Asked: December 12, 2024In: Class 12 Physics

In a series LCR circuit, the voltage across an inductor, a capacitor and a resistor are 20 V, 20 V and 40 V, respectively, What is the phase difference between the applied voltage and the current in the circuit?

Zero, because V^l and Vc nulify each other and effectively the circuit is resistive in nature. 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 300t A and V = 200 sin 300t V. What is the Power dissipation in the curcuit?

What is wattless current?

For an ideal Inductor, connected across a sinusoidal a.c. voltage source, state which one of the following quantity is zero: (i) instantaneous power, (ii) average power over full cycle of the a.c. voltage source.

How much average power, over a complete cycle, does an a.c.source supply to a capacitor?

In a series LCR circuit, the voltage across an inductor, a capacitor and a resistor are 20 V, 20 V and 40 V, respectively, What is the phase difference between the applied voltage and the current in the circuit?

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