Four 100 W bulbs are connected in parallel across 200 V supply line. If one bulb gets fused:
Correct answer: C. Rest of three bulbs will light
- A. No bulb will light
- B. All the four bulbs will light
- C. Rest of three bulbs will light
- D. Above B and C
Explanation
If one bulb fuses, the rest will continue to work. When bulbs are connected in parallel, each bulb is connected to the power supply independently, so the failure of one bulb does not affect the others. So the rest of the three bulbs will light.
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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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