Test practice

1.  Consider three resistors:  2, 6 and 4 ohms, connected in series to a 36 volt battery.  Find the total resistance, current and all voltages.

2.  Repeat the above problem, if the resistors are in parallel with the 36 volt battery.

3.  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.