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A source of constant potential differenc...

A source of constant potential difference is connected across a conductor having irregular cross section as shown. Then

A

Electric field intensity at P is greater than that at Q

B

Rate of electrons crossing per unit area of cross­section at P is less than that at Q

C

The rate of generation of heat per unit length at P is greater than at Q

D

Mean kinetic energy of free electrons at P is greater than that at Q

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