Home
Class 12
PHYSICS
The efficiency of a transformer is...

The efficiency of a transformer is

A

`eta=("output power")/("input power")`

B

`eta=("input power")/("output power")`

C

`eta="input power"-"output power"`

D

`eta=("input voltage")/("output voltage")`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

Why the efficiency of transformer is less than one?

A transformer is used to light a 100W and 110V lamp from 220V mains. If the main current is 0.5 amp, fhe efficiency of the transformer is approximately:

A transformer is used to light a 140 W, 24 V bulb from a 240 V AC mains. The current in the main cable is 0.7 A. find the efficiency of the transformer.

A step down transformer convert a voltage of 2200 V into 220V in the transmission line. Number of turns in the primary coil is 5000. Efficiency of transformer is 90% and its output power is 8kW. Calculate (i) the number of turns in the secondary coil, (ii) input power.

Define efficiency of transformer .

The efficiency of an ideal transformer is

The core of a transformer is laminated to reduce.

Transformer works on