Question

Solution

Correct option is

15.9 A

The rms current in a pure inductive circuit is given by  . .  .

The net power absorbed in a pure inductive circuit is zero.

SIMILAR QUESTIONS

Q1

The  average power  dissipation in a pure capacitor in A.C. circuit is

Q2

A 100-turn rectangular coil of size 0.20 m × 0.10 m rotates in a magnetic field of 0.003 Wb m–2 with a frequency of 1200 rpm about an axis normal to the field. Find the maximum value of the induced emf

Q3

An a.c. generator consisting of a coil of 100 turns and cross-sectional area of 3 m2 is rotating at a constant angular speed of 60 rad s–1 in a uniform magnetic field of 0.04 T. The resistance of the coil is 500 . Calculate maximum current drawn from the generator, and power dissipation in the coil. From where does the power come?

Q4

An a.c. generator consists of a coil of 50 turns and area 2.5 m2 rotating at an angular speed of 60 rad s–1 in a uniform magnetic field of 0.30 T. The resistance of the circuit including that of the coil is 500 . Find the maximum current drawn from the generator.

Q5

In a dynamo, a coil of area 0.2 m2 and having 100 turns rotates in a magnetic field of 0.1 Wb m–2 with an angular velocity of 100 rad s–1. The output terminals are connected through a resistance of . Calculate the torque , as a function of time t, required to keep the coil rotating.

Q6

The electric main in a house is marked 220V-50Hz. Write down the equation for instantaneous voltage.

Q7

A sinusoidal voltage V = 200 sin 314t is applied to a resistor. Find the frequency of the supply.

Q8

In an a.c. circuit the peak voltage of supply is 300 V. What is rms voltage? What is mean voltage during a positive half-cycle and for a complete cycle?

Q9 resistor is connected to 220 V-50 Hz a.c. supply. Find rms value of current in the circuit and the net power consumed for a complete cycle.

Q10

A 110 V-60 Hz a.c. supply is applied to a capacitor. What is rms current in the circuit? What is the net power absorbed over a complete cycle?