Question based on meter-bridge may be asked as ; What is meter-bridge ? How does it work? find the expression to find the value of unknown resistance using meter bridge.
Meter-bridge is a devise used to know the value of unknown resistance.
Principle -its working based on the principle of wheat-stone-bridge .
See the video of complete explanation of meter bridge HERE-
expression for unknown resistance will be given as S/R = 100-l/ l
where R=known resistance ; S= unknown resistance ; l is the length of the uniform wire.