Question

How can a lamp rated 12 watt 6 volt B rated on a 12 volt battery ?explain

Answer 1

Dear student

Your question is incomplete correct question will be

HOW CAN A LAMP RATED 12W 6V BE RUN ON A BATTERY OF 12V WITHOUT DAMAGING IT?

To prevent the damage caused,one way is to insert a resistor of 6 ohm.This would make 2A of current to flow through the circuit which is the required amount of current.

As, P=VI

I =P/V=12/6=2A

and R=V/I

R=12/2=6 ohm

So if we insert resistance of 6 ohm in series with lamp than we can prevent damage