The electric field in a region is given by É = (10x + 4)ĩ where x is in m and…

The electric field in a region is given by
É = (10x + 4)ĩ
where x is in m and E is in N/C. Calculate the amount of work done in taking a unit charge from

(i) (5 m, 0) to (10 m, 0)
(ii) (5 m, 0) to (5 m, 10 m)

Ans. The amount of work done in taking a unit charge: (i) from (5 m, 0) to (10 m, 0) is $1975\text{J}$. (ii) from (5 m, 0) to (5 m, 10 m) is $5400\text{J}$.