The drawing shows a situation in which charges are placed on the x and y axes. They are all located at the same distance of 45.4 cm from the origin O. Determine the magnitude of the net electric field at point P, where P is also 45.4 cm from the origin.  

In a region of space, the electric potential decreases uniformly from east to west, and does not vary in any other direction. The electric field:

Determine the magnitude of the net force on the 3 μC charge shown in the following figure.

Determine the direction of the net force on the 3 μC charge shown in the following figure.

What is an electronvolt?

The current through R4 is 0.5 A. Determine the power dissipated in R6.

The capacitor in the figure below is initially uncharged and the switch, in position c, is not connected to either side of the circuit. The switch is now flipped to position a for 10 ms, then to position b for 10 ms, and then brought back to position c. What is the final potential difference across the capacitor?

The drawing shows a situation in which charges are placed on the x and y axes. They are all located at the same distance of 45.4 cm from the origin O. Determine the direction of the net electric field at the origin. 

The current in R4 is 0.5 A. Determine the voltage across R8.

In the circuit shown below, the current through the R2 is 0.40 A. Determine the power dissipated in R4.