Two bulbs of 100 W 230 V and 150 W, 230 V are connected in parallel to a 440 V supply line. Next

Two bulbs of 100 W 230 V and 150 W, 230 V are connected in parallel to a 440 V supply line. What happens next

1. 100 W bulb will be fused
2. 150 W bulb will be fused
3. Both bulbs will be fused
4. None of them will be fused

Correct answer: 3. Both bulbs will be fused

Explanation: The voltage across both bulbs is higher than rate voltage and hence both bulbs will be fused.