The lines show the equipotential contours in the plane of
threepoint charges, Q1, Q2,
andQ3. The values of the potentials are
inkV as indicated for the +5, 0, and -5
kVcontours. The positions of the charges are indicated by
a-Calculate the work performed by an external agent to move a
charge of -0.59×10^-12 C from `i’ to `b’ ?
b-Calculate the magnitude of the electric field at `g’. ?
c- Calculate the magnitude of the force on a charge of
9.6*10^-19 C at `k’.?
d-Calculate the size of Q3. The magnitudes of the three charges
are in the exact ratios of 1 to 2 to 3.
Q1 aVolts f5 Qa cm
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