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When a metal conductor connected to left...

When a metal conductor connected to left gap of a meter bridge is heated, the balancing point

A

shifts towards right

B

shifts towards left

C

remains unchanged

D

remains at zero

Text Solution

Verified by Experts

The correct Answer is:
A
When metal wire is heated its resistance increases. `R_(1)` increases, `l_(1)` increases. The null points shift to the right
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Knowledge Check

  • In a meter bridge experiment two unknown resistance X and y are connected to left and right gaps of a meter bridge and the balancing point is obtained at 20 cm from right (XgtY) the new position of the null point from left if one decides balance a resistance of 4 X against Y.

    A
    114 cm
    B
    80 cm
    C
    50 cm
    D
    70 cm

  • Metal wire is connected in the left gap, semi conductor is connected in the right gap of meter bridge and balancing point is found. Both are heated so that change of resistances in them are same. Then the balancing point

    A
    will not shift
    B
    shifts towards left
    C
    shifts towards right
    D
    depends on rise of temperature

  • When an unknown resistance and a resistance of 4Omega are connected in the left and right gaps of a meterbridge, the balance point is obtained at 50 cm. the shift in the balance point if a 4Omega resistance is now connected in parallel to the resistance in the right gap is

    A
    66.7 cm
    B
    16.7 cm
    C
    34.6 cm
    D
    14. 6 cm