MCQ- 8 ICSE Physics class 10 ch-4 Electricity and Magnetism

Transformers - Class 10 Electricity

1. What is the basic principle of a transformer?

Heating Effect of Current
Magnetic Effect of Current
Mutual Induction
Electrolysis

Correct Answer: Mutual Induction

2. What is the purpose of a step-up transformer?

To increase current
To increase voltage
To decrease voltage
To generate electricity

Correct Answer: To increase voltage

3. What does the primary coil of a transformer do?

Receives input electrical energy
Converts electrical energy to mechanical energy
Reduces current flow
Generates electricity

Correct Answer: Receives input electrical energy

4. Which type of transformer is used in power stations to transmit electricity over long distances?

Step-down transformer
Step-up transformer
Isolation transformer
Power transformer

Correct Answer: Step-up transformer

5. What causes energy loss in a transformer?

Perfect insulation
Eddy Currents and Hysteresis Loss
Zero resistance of wire
Pure copper winding

Correct Answer: Eddy Currents and Hysteresis Loss