Find the work done "by" the electric field on a positively charged point particle with a charge of 2.1x10^-6 c as it is moved from a potential of 15.0 v to one of 8.0 v. (include the sign of the value in your answer.)

Answer

Work done will be and it will be positive

Explanation:

We have given charge

We have to find work done in moving the charge from 15 volt to 8 volt

Let

So potential difference

We know that work done , here Q is charge and V is potential difference

So work done

It will be positive work done because work is done in moving charge from higher potential to lower potential  

so easy. just google the electromagnetic waves and it’ll pop up.