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Current is flowing through a wire of non...

Current is flowing through a wire of non-uniform cross section. Cross section of wire at A is les than the cross section of wire at B. Then match the following

Text Solution

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The correct Answer is:
`(A)S, (B)Q,(C)Q,(D)Q`
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Knowledge Check

  • When heat flows through a wire of uniform cross section under steady state, then

    A
    temperature gradient is same every where
    B
    temperature at a particular point remains same
    C
    rate of heat flow is same at all cross sections
    D
    all the above

  • Assertion : Current I is flowing through a cylindrical wire of non-uniform cross-section as shown. Section of wire near A will be more heated compared to the section near B. Reason : Current density near A is more.

    A
    If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • A wire of non-uniform cross-section is carrying a steady current. Along the wire

    A
    current and current density are constant
    B
    only current is constant
    C
    only current density is constant
    D
    neither current nor current density is a constant

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    A current passes through a wire a non uniform cross-section. Which of the following quantities are independent of the cross-section?

    Assertion : If a current is flowing through a conducting wire of non-uniform cross-section, drift speed and resistance both will increase at a section where cross-sectional area is less. Reason : Current density at such sections is more where cross-sectional area is less.

    Assertion : If a current flows through a wire of non-uniform cross-section, potential difference per unit length of wire is same throughout the length of wire. Reason : Current through the wire is same at all cross-sections.

    A steady current is flowing in a conductor of non-uniform cross-section. The charge passing through any cross section per unit time is

    A non-viscous liquid is flowing through a non-uniform pipe from section A to section B as shown in the figure. Cross sectional area of the pipe at A is less than that at B . Which of the following statements are correct?

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