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Draw a circuit diagram of an electric ci...

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of `2Omega` in series with a combination of two resistors (`4Omega` each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the `2 Omega` resistor be the same as that across the parallel combination of `4Omega` resistors? Give reason.

Text Solution

Verified by Experts

The circuit is shown in figure. Effective resistance of combination of two resistors (`4Omega` each) in parallel is
`R_("eq")= (4 xx 4)/(4+4)= 2Omega`

Since the resistor of `2Omega` and parallel combination of two `4Omega` resistors are in series, same current will flow through these. Hence, the potential difference across `2Omega` resistor is same as that across combination of two resistors.
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Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistance of 2 Omega in series with a combination of two resistors ( 4 Omega each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Omega resistor be the same as that across the parallel combination of 4 Omega resistors ? Give reason.

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 omega in series with a combination of two resistors (4 omega each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 omega resistor be the same as that across the parallel combination of 4 omega resistors? Give reason.

Knowledge Check

  • In the circuit shown below: The potential difference across the 3 Omega resistor is:

    A
    `(1)/(9)V`
    B
    `(1)/(2)V`
    C
    `1V`
    D
    `2V`

  • The potential drop across the 3 Omega resistor is

    A
    `1 V`
    B
    `1.5 V`
    C
    `2 V`
    D
    `3 V`

  • If power dissipated in the 9 Omega resistor in the resistor shown is 36 W , the potential difference across the 2 Omega resistor is

    A
    `8 V`
    B
    `10 V`
    C
    `2 V`
    D
    `4 V`

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