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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 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.

Text Solution

Verified by Experts

Effective resistance of combination of two resistors (4 ohms each) in parallel is
`R_("eff")=4/2 =2 omega`
Since, the resistor of 2 ohms and parallel combination of two 4 ohms resistors are in series, same current will flow through these. Hence, the potential difference across 2 ohms resistor is same as that across combination of two resistors.

Yes. Total resistance of the parallel combination is also 2 ohm.
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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.

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Knowledge Check

  • The potential drop across the 3 Omega resistor is

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

  • 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`

  • In the given circuit diagram, potential difference across 2 Omega resistance is

    A
    `4 V`
    B
    `6 V`
    C
    `20 V`
    D
    zero

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    Draw the circuit diagram of an electric circuit containing a battery of 6 V, a key , an ammeter , a resistor of 4 Omega in series with a combination of two resistors of 8 Omega each in parallel, and a voltmeter across the parallel combination. (a) Calculate the resistance of the circuit . (b) Find the current flowing in the circuit. (c) What will be the voltage across the parallel combination of resistors?

    Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 4Omega in series with a combination of two resistors ( 8Omega each ) in parallel and a voltmeter across parallel combination. Each of them dissipate maximum energy and can withstand a maximum power of 16 W without melting. Find the maximum current that can flow through the three resistors.

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