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Fig. shows lines of constant potential ...

Fig. shows lines of constant potential in an electric field. Out of the three given points P,Q,R where is electric field intensity maximum and where is it minimum ?

A

maximum at Q and minimum at P

B

maximum at P and minimum at Q

C

maximum at Q and minimum at R

D

maximum at P and minimum at R

Text Solution

Verified by Experts

The correct Answer is:
D
Using the relation, `E = - (dV)/(dr)`, we find that
electric intensity is maximum at P and minimum at R.
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Knowledge Check

  • Electric field intensity at a point varies as r^(-3) for

    A
    A point charge
    B
    An electric dipole
    C
    A plane infinite sheet of charge
    D
    A line charge of infinite length

  • Electric field intensity at a ponnt varies as r^(-3) for

    A
    a point charge
    B
    An electric dipole
    C
    A plane infinite sheet of charge
    D
    A line charge of infinite length

  • In the diagram shown electric field intensity will be zero at a point.

    A
    Betwee -q and +2q charge
    B
    Towards +2 cahrge on the line
    C
    Away from line towards +2q charge
    D
    Away from line towards -charge

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