3.5.2

Question 2 Field lines point out from one end of an object and loop around to enter the other end of the object. Which statement best describes the object?

A.It is an iron bar.

B.It is a permanent magnet.

C.It is positively charged on each end.

D.It is negatively charged on each end.

Question 3 How would you change the distance between two positively charged particles to increase the electric potential energy by a factor of 4? 

A.Reduce the distance by a factor of 4.

B.Increase the distance by a factor of 16.

C.Increase the distance by a factor of 4.

D.Reduce the distance by a factor of 16. 

Question 4 In which direction does the electric field point at a position directly north of a positive charge? A.EastB.SouthC.WestD.North

Question 11 What is the equivalent resistance of a circuit that contains three 20.0  resistors connected in parallel with a 12.0 V battery? A.60.0 B.6.67 C.0.600 D.30.0 

Question 16 What is the magnetic force on a proton that is moving at 4.5  107 m/s to the right through a magnetic field that is 1.6 T and pointing away from you? The charge on a proton is 1.6  10-19 C. Use F = qv  Bsin. 

A.1.2  10-11 N up

B.1.2  10-19 N down

C.7.2  10-7 N up

D.7.2  10-7 N down 

Question 17 What is special about an AC circuit? A.It has both series and parallel components.B.Charge moves in a single direction.C.Charge moves back and forth very quickly.D.It has only series or only parallel components.

Question 25 Controlling the amount of current in a circuit by opposing the flow of charge is a function of which circuit component? A.TransistorB.ResistorC.BatteryD.Capacitor