Question

If two bulbs of wattage 25 and 30, each rated at 220 volts, are connected in series with a 440 volt supply, which bulb will fuse

• A. 25 W bulb
• B. 30 W bulb
• C. Neither of them
• D. Both of them

Answer 1

Answer: (A)

25 W bulb

Answer 2

In series, $P_{Consumed} \propto \frac{1}{P_{Rated}} \propto V_{Applied}$ i.e. more voltage appears on smaller wattage bulb, so 25 W bulb will fuse