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Name a device that helps to maintain a p...

Name a device that helps to maintain a potiontial difference across a conductor.

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A battery (consisting of one or more electric cells) is used to maintain s potential difference across a conductor.
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Name a device that helps to maintain a potential difference across a conductor.

Name a device that helps to maintain a potential difference across a conductor.

Knowledge Check

  • Name a device that helps to maintain a potential difference across a conductor .

    A
    Electric cell
    B
    Voltmeter
    C
    Resistor
    D
    Variable Resistor

  • Which law states the relationship between the potential difference across a conductor and the current flowing through it ?

    A
    Newton's law
    B
    Faraday's law
    C
    Ohm's law
    D
    Joules law

    • Similar Questions

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    Name a device that helps to maintain a potential difference across a conductor.

    (a) Name a device which helps to maintain potential difference across a conductor (say, a bulb). (b) If a potential difference of 10V causes a current of 2A to flow for 1 minute, how much energy is transferred?

    (a) Name a device that helps to measure the potential difference across a conductor. (b) How much energy is transferred by 12 V power supply to each coulomb of charge which it moves around a circuit?

    (i) The potential difference between two points in an electric circuit is 1 volt. What does it mean? Name a device that helps to measure the potential difference across a conductor. (ii) Why does the connecting cord of an electric heater not glow while the heating element does? (iii) Electrical resistivities of some substances at 20^(@)C are given below: Answer the following questions using above data: (a) Among silver and copper, which one is a better conductor? Why? (b) Which material would you advise to be used in electrical heating devices and why?

    Discuss the principle of potentiometer and explain the determination of potential difference across a conductor using a potentiometer.

    ColumnI lists physical quantities for a uniform current carrying conductor . These quantities depend on quantities given in column II. Match entries in column I to all the quantities in column II on which it depends. {:(,"Column I",,"Column II"),((A),"Resistivity",(p),"Length of conductor"),((B),"Current through the conductor for a given potential difference across the condcutor",(q),"Electric field in conductor"),(( C),"Current density in condcutor for a given potential difference across the conductor ",(r ),"Temperature of conductor"),((D),"Thermal power generated per unit volume for given value of potential difference across the conductor",(s),"Nature of conductor"),(,,(t ),"Area of condcutor"):}

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