# Minqi 19 May 2016 - 2

## Question

The figure shows a full scale diagram of equipotential lines of an electric field, with potential difference of 3.0 V between adjacent lines.

What is the closest estimate of the magnitude and direction of the field strength at P along the dotted line?

Hence the electric field strength is $$\left | E \right | = \left | 6.0 \over d \right |$$ towards the left.