Home
Class 12
PHYSICS
An electric heater rated 220 V and 550 V...

An electric heater rated 220 V and 550 V is connected to AC mains. The current drawn by it is

A

0.8 A

B

2.5 A

C

0.4 A

D

1.25 A

Text Solution

Verified by Experts

The correct Answer is:
B
P = VI
I = P/V = 550/220 = 2.5 A
Promotional Banner

Similar Questions

Explore conceptually related problems

An electric bulb rated 220 V and 60 W is connected in series with another electric bulb rated 220 V and 40 W . The combination is connected across a source of emf 220 V . Which bulb will glow more?

A bulb rated 60 W-120 V is connected to 80 V mains. What is the current through the bulb

An electric heater draws a current of 5 A when connected to 220 V mains. Calculate the resistance of its filament.

An AC source rated 220 V, 50 Hz is connected to a resistor. The time taken by the current to change from its maximum to the rms value is :

An electric heater is connected to the 230V mains supply. A current of 8A flows through the heater. (a) How much charge flows around the circuit each second? (b) How much energy is transferred to the heater each second?

An electric bulb and electric heater are rated 100 W,220 V and 500 W, 220 V respectively. Both are connected in series to a 220V d.c. mains. Calculate the power consumed by (i) electric bulb and (ii) heater

In a stepup transformer, the ratio of number of turns in primary and secondary coils is 1 : 10 . What voltage will develop in the secondary if the primary is connected to 220 V mains ? If the current drawn from the secondary is 2A, calculate the current through the primary

A lamp of 600W-240V is connected to 220 V mains. Its resistance is