Question

The summary identifies the location(s) in the electric field where the field strength is the greatest, explains how the electric field strength changes due to a change in position, describes the movements of both a positive and a negative test charge placed in the electric field, predicts how the electric field changes due to an increase and decrease in voltage, and predicts how the electric field changes due to an increase and decrease in the distance between leads.

Answer 1

(a) When the voltage increases, the electric field increases, and vice versa.

(b) When the distance of the charge increases, the electric field strength decreases, and vice versa.

Electric field direction

The direction of the electric field depends on the direction of the positive charge, electric field is always directed opposite to positive charge.

Relationship between electric field and voltage

The potential of a unit charge is the product of the electric field strength and the distance of the charge.

V = Ed

E = V/d

Thus, when the voltage increases, the electric field increases, and when the voltage decreases, the electric field decreases.

Also, when the distance of the charge increases, the electric field strength decreases, and the distance decreases, the electric field strength increases.

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