CHAPTER 6 QUIZ

OHM'S LAW

1. Solve for the unknown value in each of the circuits in the following drawing.

2. A lamp has 2 amperes of current through its 30 ohms of resistance. What current will
    flow if the resistance is increased to 60 ohms?

3. A certain lamp has 50 ohms of resistance and is built to carry 2.4 amperes. Will the
    lamp stand (a) 110 v. (b) 220 v.?

4. What two things control current in every circuit?

CHAPTER 6 ANSWERS

OHM'S LAW

1. A - 4.4 amps.    B - 108 v.    C - 30 ohms.    D - 20 v.

2. 1 amp.

3. (a) Yes, the current is only 2.2 amps at 110 v. (b) No, the current is 4.4 amps at
    220 volts. This current would burn out the lamp.

4. Voltage and resistance.