## Question

### Solution

Correct option is

0.25 A, 100 V, 7.5 V

The capacitor reactive of the circuit is   .

The impedance of the given R-C circuit is  The (rms) current in the circuit is  .

The (rms) voltage across the capacitor is   .

and the across the resistor is  The sum of these is 100 V + 7.5 V = 107.5 V, which is greater than the source voltage (100 V).

This is because the two voltages are not in phase, they are mutually perpendicular to each other.

#### SIMILAR QUESTIONS

Q1

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

Q2

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?

Q3 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.

Q4

A 220 V-50 Hz a.c. supply is applied to a 44-mH inductor. What is rmscurrent in the circuit? What is the net power absorbed over a complete cycle?

Q5

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?

Q6

An alternating voltage E = 200 sin 300t is applied across a series combination of and L = 800 mH. Calculate the impedance of the circuit.

Q7

A coil of inductance 0.50 H and resistance is connected to a 240 V-50 Hz a.c. supply. What are the maximum current in the coil and the time lag between voltage maximum and current maximum?

Q8

An emf E = 100 sin 314t volt is applied across a pure capacitor of 637 . Find the instantaneous current i.

Q9

An a.c. voltage V = 200 sin 314t is applied across a series C-R circuit.Where . Find the capacitive reactance.

Q10

Calculate the rms current in an a.c. circuit containing a capacitor of in series. The power supply in the circuit is rated 230 V, 50 Hz.