Problem 1:
A stationary electric charge
q
= 2.6
×
10
-8
C is placed in a laser beam
whose intensity is 2.5
×
10
3
W/m
2
. Determine the magnitude of the (a) electric and (b)
magnetic forces exerted on the charge
If the charge is now moving perpendicular to
magnetic forces exerted on the charge. If the charge is now moving perpendicular to
the magnetic field with a speed of 3.7
×
10
4
m/s, find the magnitudes of the (c) electric
and (d) magnetic forces exerted on it.

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Problem 2
– A tiny bulb is emitting light uniformly in all directions. At a distance
of 2.5 m from the source, the electric field has a maximum value of 26.9 N/C.
Assuming that the light does not reflect from anything in the environment
Assuming that the light does not reflect from anything in the environment,
calculate the
average power
of the light emitted by the source.