Electric Potential

In this picture, the work done by the Electric field on the positive test charge is

• positive

• negative

• zero

• perpendicular to the displacement

If the test charge q₀ has a charge of 3.2 nC, and it is displaced 3 cm, and the electric field is 30,000 N/C, what is the work done by the Electric field?

• 2.88 x 10^-4 J

• 2.88 x 10^-5 J

• 2.88 x 10^-6 J

• 2.88 x 10^-7 J

For the system consisting of the test charge and the metal plates, at what instance is the Electric Potential Energy of the system highest?

• When the test charge is at point A

• When the test charge is at point B

• The electric potential energy is the same at A and B

• When the electric field disappears

What happens to the Electric Potential Energy of the system as the test charge moves from point A to B?

• The EPE increases

• The EPE decreases

• The EPE stays the same

If the Electric Field does 100 J of work to move a test charge from point A to B, then what is the change in Electric Potential Energy of the test-charge metal plates system?

• 100 J

• -100 J

• 0 J

• needs more information

As a positive test charge moves from C to D, the system gains Electric Potential Energy. Which metal plate is positive?

• green plate

• black plate

• both plates are positive

• both plates are negative

A negative test charge, when placed in point C, naturally accelerates towards point D. What is the direciton of the Electric Field?

• East

• West

• North

• South

The electric potential is

• a property of a test charge

• a property of a source charge

• a property of space

• the energy of a charged object

To start finding the electric potential difference (ΔV) between points G and H,

• you need to put a positive test charge at G

• you need to put a negative test charge at G

• you need to put any signed charge at G

• you need to put a negative test charge at H

Without a test charge, the electric potential at points G and H won't exist.

• true

• false