An electric field of `20 N C ^(-1)` exists along the x-axis in space. Calculate the, potential difference `V_B - V_A` where the points A and B are given by,

Explanation

Electric field in x- axis means `vec(E)=10 hat(i)`

`{:((a),|DeltaV_(AB)|=vec(E).vec(d)=10 hat(i). 8hat(i)=80 V,implies,V_(B)-V_(A)=-80 V),((b),|DeltaV_(BC)|=vec(E).vec(d)=10 hat(i). 4hat(i)=40" volt",implies,V_(C)-V_(B)=-40 V),((c),|DeltaV_(AC)|=vec(E).vec(d)=10 hat(i). 12 aht(i)=120" volt",implies,V_(C)-V_(A)=-120 V):}`