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Draw the circuit diagram to verify Ohm's...

Draw the circuit diagram to verify Ohm's Law with the help of a main resistance of `100 Omega` and tow galvanometer of resistance `10^6 Omega and 10^(-3)Omega ` and a source of varying emf.
Show the correct positions of volmeter and ammeter.

Text Solution

Verified by Experts

The correct Answer is:
A
For the experiment verification of Ohm's law, ammeter and
voltmeter should be connected as shown in figure.
A voltmeter is a high resistance galvanometer `(10^6Omega)` which
is connected in paralllel with the main resistance of `100Omega`
An ammeter is a low resistance galvanometer `(10^(-3)Omega) which
is connected in parallel with the main resistance.
.
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Draw the circuit for experimental verification of Ohm's law using a source of variable DC voltage, a main resistance of 100 Omega , two galvanometers and two resistances of value 10^6 Omega and 10^-3Omega respectively. Clearly show the positions of the voltmeter and the ammeter.

Draw the circuit for experimental verfication of Ohm's law using a source of variable DC voltage, a main resistance of 100 (Omega) , two galvanometers and two resistances of values 10^(6) Omega and 10^-3 respectively. Clearly show the positions of the voltmeter and the ammeter.

Knowledge Check

  • A galvanometer of resistance 25Omega measures 10^(-3)A . shunt required to increase range up tow 2 A is

    A
    `12.5 mOmega`
    B
    `0.125 mOmega`
    C
    `0.125 Omega`
    D
    `1.25 mOmega`

  • An experiment is performed to calculate the value of an unknown resistance R of range K Omega by using a battery of variable potential difference, a voltmeter of resistance 10^6 Omega and an ammeter of resistance 10^(-3)Omega . Choose the circuit diagram which indicates correctly the position of ammeter and voltmeter so that percentage error in calculation of R is minimum

    A
    B
    C
    D
    none of the above

  • A galvanometer of resistance 90 Omega is shunted by a resistance of 10 Omega . What fraction of main current passes through the shunt ?

    A
    `1//10`
    B
    9/100
    C
    1/100
    D
    `9//10`

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