Home
Class 12
PHYSICS
In a potentiometer of 10 wires, the bala...

In a potentiometer of 10 wires, the balance point is obtained on the `7^(th)`. To shift the balance point to `9^(th)` wire, we should

A

decrease resistance in the main circuit.

B

increase resistance in the main circuit.

C

decrease resistance in series the cell whose emf is to be measured.

D

increase resistance in series with the cell whose emf is to be determined

Text Solution

Verified by Experts

The correct Answer is:
D
To shift the balance point on higher length, the potential gradient of the wire is to be decreased. The same can be obtained by decreasing the current of the main circuit, which is possible by increasing the resistance in series of potentiometer wire.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NCERT FINGERTIPS|Exercise Higher Order Thinking Skills|8 Videos

  • CURRENT ELECTRICITY

    NCERT FINGERTIPS|Exercise NCERT Exemplar|6 Videos

  • CURRENT ELECTRICITY

    NCERT FINGERTIPS|Exercise Meter Bridge|4 Videos

  • COMMUNITCATION SYSTEMS

    NCERT FINGERTIPS|Exercise HOTS|10 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

In a potentiometer, balance point is obtained, when

In a potentiometer experiment, to measure the e.m.f. of a cell, the potentiometer consists of six wires each of length 100 cm. The null point is obtained on the third wire. If we want to shift the null point to the 5th wire, then we should

Knowledge Check

  • In a potentiometer of 10 wires, the balance point is obtained on the 7^(th) wire. To shift the balance point to 9^(th) wire, we should

    A
    decrease resistance in the main circuit
    B
    increase resistance in the main circuit
    C
    decrease resistance in series with the cell whose emf is to be measured
    D
    increase resistance in series with the cell whose emf is to be determined

  • In a potentiometer of 5 wires, the balance point is obtained on the 3rd wire. To shift the balance point to the 4th wire,

    A
    current of the main circuit is to be decreased.
    B
    current of the main circuit is to be increased.
    C
    the shifting is not possible
    D
    None of the above

  • In a potentiometer of ten wires each of 1m , the balance point is obtained on the sixth wire. To shift the balance point to eighth wire, we should

    A
    increases the resistance in the primary circuit
    B
    decrease the resistance in the secondary circuit
    C
    decrease the resistance in series with the cell whose emf is to be determined
    D
    increases the resistance in series with the cell whose emf's is to be determined.

    • Similar Questions

    Explore conceptually related problems

    In a potentiometer, the null point is received at 7th wire. If now we have to change the null point at 9th wire, what should we do?

    In a meter bridge experiment when a resistance wire is connected in the left gap, the balance point is found at the 30^(th) cm. When the wire is replaced by another wire,t he balance point is found at the 60^(th) cm. Find the balance point when the two wires connected in parallel in the left gap successively

    In a potentiometer, if we increase the value of R, in which direction does the balance J shift?

    In comparing e.m.f. of two cells by a potentiometer balance point is obtained on 5^(th) wire, the current flowing through the wire is taken

    A cell of internal resistance 5.1 Omega and of e.m.f. 1.5 volt balances 500 cm on a potentiometer wire. If a wire of 15Omega is connected between the balance point and the cell, then the balance point will shift

    Home
    Profile