Which of the following defines the opposition to the flow of electrical current? A. charge B. current C. voltage D. resistance

When AC is changed into DC to charge a laptop or phone, is the resulting voltage perfectly constant? A. Yes B. No, but it can be made pretty close C. No, in fact sometime it's negative

Would a pencil rolling off a desk be kinetic energy?

Suppose that after a certain time tl, the string has been pulled through a distance l. what is the final rotational speed ωfinal of the wheel?

The per-unit impedance of a single-phase electric load is 0.3. The base power is 500 kVA, and the base voltage is 13.8 kV. a. Find the per-unit impedance of the load if 1 MVA and 24 kV are selected as base values. b.

If the resistance in a circuit connected to a constant current is halved, how is the voltage in the circuit affected? The voltage remains constant. The voltage is doubled. The voltage is reduced by a factor of 4.

What is a transverse wave

Object moving at a constant velocity will always have a

Who would most likely agree that a child learns certain behaviors from observing other people?

A bullet is fired horizontally from a height of 78.4 m and hits the ground 2400 m away. With what velocity does the bullet leave the gun?

Select the correct answer. Two charged objects, A and B, exert an electric force on each other. What happens if the distance between them is increased? O A. The charge on B decreases. OB. The charge on B increases. OC.