Question

10. Assume that an electric field ] =30x?î exits in
space. Then the potential difference Va -Vo, where Vo
is the potential at the origin and the potential at
x=2 m is
(a) 120 V
(b) –120 V
(c) -80 V
(d) 80 V​

Answer 1

Answer:

 

Explanation:            HELLO SO IT IS EASY TO  SOLVE WITH SOME RELATE AND DIAGRAM

SO LET US CONSIDER A PONT A AND B PLACED AT MID OF DISTANCE 2M OF VA AND THE DISTANCE FOR B IS ALSO 2 FOR VB

SO TOTAL DISTANCE WILL BE= 2+2=4M

HENCE WE KNOW POTENTIAL VA-VB=-Edr

therefore 30 into 4=-120V

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