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CBSE Class 12 Electrical Appliances Sample Question Papers 2027

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Frequently Asked Questions

Why are fuses important in electrical appliances?

Fuses are important because they provide overcurrent protection by melting and breaking the circuit if excessive current flows through them.

What role does a diode play in circuits?

A diode allows current to flow in one direction only, acting as a gatekeeper that prevents reverse current which could damage components.

How do electric motors convert electricity into motion?

Electric motors convert electricity into motion by using electromagnetic fields to generate rotational force on a rotor within the motor.

What is alternating current (AC)?

Alternating current (AC) is an electric current that periodically reverses direction, typically used in power supplies due to its efficient transmission over long distances.

What distinguishes direct current (DC) from AC?

Direct current (DC) flows consistently in one direction without reversing, often used in batteries and electronic devices requiring stable voltage.