two electric bulbs marked (25 W - 220 V and(100 W - 220 V are connected in series to a 440 V supply which of the bulbs will fuse ......... a. 100 W. 6.25 W c. None of this. d. Both.
The 25W bulb has 4 times the resistance of the 100W bulb, so 4/5 of the circuit voltage will develop across that bulb. The 352 volts applied will far exceed the rating of the 25W bulb, causing it to fail.
