*1986E1. Three point charges produce the electric equipotential lines shown on the diagram above.
a. Draw arrows at points L,N. and U on the diagram to indicate the direction of the electric field at these points.
b. At which of the lettered points is the electric field E greatest in magnitude? Explain your reasoning.
c. Compute an approximate value for the magnitude of the electric field E at point P .
d. Compute an approximate value for the potential difference, VM−VS, between points M and S .
e. Determine the work done by the field if a charge of +5×10−12 coulomb is moved from point M to point R.
f. If the charge of +5×10−12 coulomb were moved from point M first to point S , and then to point R , would the answer to e. be different, and if so, how?