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Question
State three differences between direct current and alternating current.
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Solution
| 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. |
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