Question

in metre bridge if we connect 12ohms in a left gap and x ohms in a right gap and they null deflection point is found at to be at 32cm from the left . Find the value of x. If we interchange the given resistance.Calculate the strand of null deflection point from the right.​

Answer 1

Answer:

X = 24 ohm

new null point , l = 66.6 cm

Explanation:

X/68 = 12/32

X= 68*12/32=24 ohm

if the resistances are interchanged,

X/l = 12 / 100-l

24/12 = l/100-l

2(100-l)= l

200=3l

l=200/3

l= 66.6 ohm