An electric filament bulb can be worked from:
Correct answer: D. All above
- A. D.C. supply only
- B. A.C. supply only
- C. Battery supply only
- D. All above
Explanation
The main work of an electric filament bulb is to glow when an electric current is passed through the electric filament. The only requirement for glowing of the electric filament in the electric bulb is the electric current. The electric current required to glow the bulb can be supplied from a direct current supply (DC supply), alternating current supply (AC supply) or battery supply.Therefore, the electric current can be worked from DC supply, AC supply and battery supply.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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