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The variation of potential with distance...

The variation of potential with distance R from the fixed point is shown in (Fig. 3.125).
.
The electric field at `R = 5 m` is.

A

`2.5 Vm^-1`

B

`-2.5 Vm^-1`

C

`0.4 Vm^-1`

D

`-0.4 Vm^-1`

Text Solution

Verified by Experts

The correct Answer is:
a
`E = - (d V)/( d r)` = negative of the slope of `V - r` garph.
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Knowledge Check

  • The variation of potential with distance R from a fixed point is shown in figure. The electric field at R = 5 m is -

    A
    `2.5 Vm^(-1)`
    B
    `-2.5 Vm^(-1)`
    C
    `(2//5) Vm^(-1)`
    D
    `-(2//5)Vm^(-1)`

  • The variation of electric potential with distance from a fixed point is shown in figure. What is the value of electric field at x = 2m -

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    Zero
    B
    `6//2`
    C
    `6//1`
    D
    `6//3`

  • The variation of potential with distance R from a fixed point is as shown below. A charge - q is put at R = 3 m and released. The charge will

    A
    Move away from origin
    B
    Move towards the origin
    C
    Not move
    D
    Trace a cicular path

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