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  3. Physics
  4. The figure-3.326, shows a meter bridge circuit, with A B=100 cm , X=12 Ω and R=18 Ω and the jockey J in the position of null deflection balance. If R is now changed to 8 Ω, through what distance will J have to be moved to obtain the balance again?

Q. The figure-, shows a meter bridge circuit, with and and the jockey in the position of null deflection balance. If is now changed to , through what distance will have to be moved to obtain the balance again?

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Solution:

Initially if is the balancing length then we have



If the new balancing length is then we have



Thus is displaced by

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