Final exam review E&M 2025

How many white dots have the same electric field value (strength) as the black dot?

• 0

• 3

• 7

• 11

In which image is the magnetic flux the greatest?

• Image on the left

• Image on the right

• Both images have the same flux

Where should a negative charge be positioned on the x-axis in order to remain stationary ?

• Region A

• Region B

• At C

• Region D

• Region E

The magnetic field through a closed circular loop is decreasing at a constant rate. The induced current is

• clockwise and decreasing

• clockwise and constant

• anticlockwise and decreasing

• anticlockwise and constant

As a negative charge moves from point A to point B...

• Its speed increases

• Its speed decreases

• Its speed remains constant

Which of the following will allow a battery to be ON the longest?

• Option A

• Option B

• Option C

When is the current leaving the 8V cell the highest?

• At t=0+

• At steady-state

• Current is always the same

Where is the electric field the greatest?

• At point A

• At point B

• Halfway between point A and point B

• The field is equal everywhere

In which of the following path(s) is the charge negative?

• path 1

• path 2

• path 3

• All paths are negative moving charges

Several positive charges (q) are held at the corners of a dodecagon. Which of the following is true regarding the magnitude of the electric field and electric potential?

• Both the electric field and electric potential are zero

• The electric field is zero, but the electric potential has a non-zero positive value

• The electric field has a non-zero value, but the electric potential is zero

• Both the electric field and electric potential have non zero values