State three differences between direct current and alternating current.
|Direct current||Alternating current|
|1||Direct current flows only in one direction.||1||Alternating current reverses its direction periodically with time.|
|2||It cannot be used in large-scale generation of electricity for household purposes.||2||It is used in household electrical appliances such as electric heater, electric iron, refrigerator etc.|
|3||The frequency of direct current is zero.||3||The frequency of alternating current in India is 50 Hz.|
Concept: Electromagnetic Induction
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