1. What is the capacitive reactance if the frequency is 60 hz and the capacitance is 220 mf?

a. sqrt[(60x60)+(220)(220)].

b. 159,000/(60)(220).

c. 618x60x(1/220).

2. Which is the formula for finding the resultant impedance of a series curcuit with a resistor and a coil?

a. Z=SQRT[R+Xl].

b. Z=SQRT[(RxR)+(XL*XL)].

c. neither of these.

3. The amount of heat emitting from a resistor is directly proportion to all but one of these.?

a. series curcuit current .

b. parallel curcuit voltage.

c. capacitance.

4. Which of these is not a resistor?

a. a battery.

b. a wire.

c. a lightbulb.

5. Which has the most resistance?

a. a skinny wire.

b. a fat large gage wire.

c. an open curcuit.

6. 2 capacitors are connected in series. The total capacitance is just the sum of the two?

a. false.

b. true.

c. niether.

7. Which has the highest total current?

a. a series curcuit with 30volt series battery and a 60 ohm resistor.

b. a 30volt battery in parallel with a 60ohm resistor in each of two legs..

c. both are the same.

8. What is the total resistance in the parallel curcuit in the previous question?

a. 40 ohms.

b. .1 ohms.

c. 30 ohms.

9. A 30 ohm resistors is in series with a 70 ohm resisitor. What is the total resistance?

a. 40 oms.

b. 100 ohms.

c. 2100 ohms.

10. Two 50 ohm resistors are connected in parallel with a battery. If the total current is 1 amp, what is battery's voltage?

a. 25 volts.

b. 50 volts.

c. neither of these.