When an electric current flows through a long conductor, each free electron moves
a. through a relatively short distance.
b. from one end of the conductor to the other end.
c. back and forth between the ends of the conductor.
d. with a speed of 300,000,000 m/s.

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.