Anegative test charge experiences a force to the right as a result of an electric field. which is the best conclusion to draw
based on this description?
the electric field points to the left because the force on a negative charge is opposite to the direction of the field
the electric field points to the right because the force on a negative charge is in the same direction as the field
o no conclusion can be drawn because the sign of the charge creating the field is unknown
o no conclusion can be drawn because the amount of charge on the test charge is unknown

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in