Determine for each of the following statements whether it is correct or incorrec

Question

Determine for each of the following statements whether it is correct or incorrect. 1) A positive charge placed at the center of a negatively charged (uniform) spherical shell is not in equilibrium? 2) The force between two charges is a vector 3) The force on a 1 Coulomb charge placed at a point where the Electric Field is 1 Volt/ meter is 1 Newton ? 4) A charge placed at the center of a square which has 4 equal charges at its 4 corners is in equilibrium? 5) The Electric Field at a point is due to charge distribution is a scalar

Explanation / Answer

1) Incorrect, because the charge distribution is uniform, the forces are balanced in all directions.

2) Correct, force is always a vector, in this case it is from one charge to another.

3) Correct, F = E.q = (1 v/m) x (1 C) = 1 N.

4) Correct, the forces in X and Y directions due to four charges are equal and opposite.

5) Incorrect, Electric field is always a vector, pointing away from positive charge.

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