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An electric field vec E=(25hat i+30hat j...

An electric field `vec E=(25hat i+30hat j)NC^(-1)` exists in a region of space.If the potential at the origin is taken to be zero then the potential at `x`=2 m `y`=2 m is :?

A

`-110V`

B

`-140V`

C

`-120V`

D

`-130V`

Text Solution

Verified by Experts

The correct Answer is:
A
As we know `E=-(dv)/(dx)`
Potential at the point `x=2m, y=2m` is given by
`int_(0)^(V)dV=-int_(0)^(2,2) (25dx+30dy)`
On solving we get `V=-110` volt.
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DISHA PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-EXERCISE 2: CONCEPT APPLICATOR
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