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The emf of a cell is balanced at 52 cm length of the potentiometer wire. If 5 ohm resistance is inserted from
the resistance

By Claire

The emf of a cell is balanced at 52 cm length of the potentiometer wire. If 5 ohm resistance is inserted from
the resistance box connected with the cell, then balancing length obtained is 40 cm The internal resistance of
the cell will be​

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Claire

Commonsense psychology is a practice iff groups of people engage in the activity of describing, explaining and predicting human th

change. the singular into plurals and rewrite these sentences. 1. the( doctor) pulled out the aching ( tooth) .

1 thought on “The emf of a cell is balanced at 52 cm length of the potentiometer wire. If 5 ohm resistance is inserted from<br />the resistance”

  1. Answer:

    1.5 Ω

    Given,

    R=5Ω

    l

    1

    =52cm,l

    2

    =40cm

    To find,

    Internal resistance of cell, r=?

    r=R(

    l

    2

    l

    1

    −1)=5(

    40

    52

    −1)=5(

    40

    52−40

    )=5(

    40

    12

    )=5(

    10

    3

    )=

    10

    15

    =1.5Ω

    ⇒r=1.5Ω

    Therefore, the internal resistance of the cell is 1.5Ω

    Reply

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