It's not widely realised that incandescent lamps have a fuse element in series with the lamp base and the filament. This fuse is designed to prevent the lamp exploding in the event of a failure of the filament which results in it being short circuited.
What happens? The bulb lights up when power is applied. Fuses protect the wiring and sockets from excessive current flow. If the wires and socket can handle 13 amps without overheating, then all's good. So, replacing the bulb with a smaller wattage is ok; replacing the fuse with a larger capacity fuse is bad.
A series connection will not work if one bulb fuses but in a parallel connection if one bulb fuses the rest will stay lit.
When a bulb fuses the circuit is broken if it is on a serial circuit. If the bulb is on a parallel circuit, only the fused bulb will go out, any other bulb would remain lit. On a serial circuit, until the bulb is replaced by a new one, the circuit is not able to be used.
Try the fuses.
most common cause is a burned out light bulb, if not the bulb,check fuses and stop light switch
Might be a bulb is installed incorrectly or wrong bulb for socket or the bulb base is broken, causing a short. Or the socket is broken and a contact is shorted to ground. Get one of those circut breaker type fuses and do process of elimination one bulb at a time.
Your owner's manual is the best place to locate your fuse box(es) and identify your fuses. Don't rule out that your issue is being caused by a bad bulb too - so check fuses and bulbs. See sources and related links below for bulb information.
when a light bulb is switched on it will blown..............
Light bulb fuses when the filament inside gets overheated due to excess load, and melts, causing it to break.
The bulb will get brighter
Either check the fuses or change the bulb.
try changing the bulb or turning bulb around in the socket as the bulbs are polarity sensitive