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CBSE Class 12 Electrical Appliances Sample Question Papers 2026
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Frequently Asked Questions
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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.