If a test charge of +3muC is placed at point P where the electric field due to o

Question

If a test charge of +3muC is placed at point P where the electric field due to other charges is directed to the right and has a magnitude of 4 times 10s N/C. If this test charge is replaced by one of -3muC, what happens to the electric field at P? nothing it has the same magnitude but the opposite direction it increases in magnitude but has the same direction If decreases in magnitude but has the same direction Both the direction and magnitude change Concerning the previous question, what happens to the force felt by the particle point P when the change is made? nothing it has the same magnitude but the opposite direction it increases in magnitude but has the same direction If decreases in magnitude but has the same direction Both the direction and magnitude change

Explanation / Answer

1.

option A.

nothing will happen. electric field is independent of test charge

2.

option B

magnitude of the force remains same , since magnitude of test charge is not changing

direction will change because sign of test charge is changing

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