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.

Which one of the following statements best explains why chromatic aberration occurs in lenses, but not in mirrors?

A convex mirror has a radius of curvature of 0.50 m.  When an object is placed in front of the mirror the image is formed 0.15 m behind the mirror. Determine the magnification.

As shown in the figure below, a 7.50 mH inductor is connected in series with a 3.00 Ω resistor. Find the current 5.50 ms after the switch is moved to position 2 to disconnect the battery, if it is initially 10.0 A.