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A metallic conductor of irregular corss-...

A metallic conductor of irregular corss-section is as shown in the figure. A constant potential difference is applied across the ends `(1)` and `(2)`. Then:

A

the current at the cross -section P equals the current at the cross -section Q

B

the electric field intensity at P is less than at Q

C

the rate of heat generated per unit time at Q is greater than that at P

D

the number of electrons crossing per unit area of cross -section at P is less than that at Q.

Text Solution

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The correct Answer is:
A,B,C,D
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Knowledge Check

  • When a potential difference is applied across the ends of a linear metallic conductor

    A
    The free electrons are accelerated continuously from the lower potential end to the higher potential end of the conductor
    B
    The free electrons are accelerated continuously from the higher potential end to the lower potential end of the conductor
    C
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    D
    The free electrons are set in motion from their position of rest
  • Across a metallic conductor of non-uniform cross-section a constant potential difference is applied. The quantity

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    Current density
    B
    Current flows form `E` to `F`
    C
    Drift velocity
    D
    Electric field
  • If the potential difference applied across a Coolidge tube is increased , then

    A
    wavelength of `K_(alpha)` will increase
    B
    `lambda_(min)` will increase
    C
    different between wavelength of `K_(alpha)` and `lambda_(min)` increase
    D
    none o these
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