Test practice

1.  Consider three resistors:  2, 5, and 10 ohms.  They are in series with a 30-V battery.  Find total resistance, current and individual currents and voltages.

2.  Repeat the above problem if the resistors are in parallel with the battery.

3.  Resolve the combination circuit below:

4.  Charge review.  Consider a chunk of charge:  -15 C.  

A.  What kind of particles are these?

B.  How many of these particles are there

C.  If a 10 C charge is brought nearby, 0.1 m away, what is the force between the two chunks of charge?

D.  Draw the electric field between the charges.