The resistance of a circuit can be found by using one of the following:
  1. R=I/E 2. R=E/I 3. R=E/R 4. R=EI

      A circuit has a total resistance of 100 ohms. When a voltage of 50 volts is applied to the circuit, the current which will flow will be:
1. 50 mA 2. 500 mA 3. 2 amperes 4. 20 amperes

     A resistor with 10 volts across it and passing a current of 1 mA has a value of:
1. 10 ohms 2. 100 ohms 3. 1 kilohm 4. 10 kilohm

      If two resistors of 180 and 820 ohms are connected in series across a 15 volt power supply, the current flow in the circuit would be:
1. 15 milliamperes 2. 30 mA 3. 15 amperes 4. 30 amperes

A set of three resistors, each of 33 ohms wired in parallel, is connected to a power supply. If each resistor is carrying 1 ampere, the voltage of the power source is:
1. 99 volts 2. 33 volts 3. 11 volts 4. 1 volt

The total current in a parallel circuit is equal to:
1. the current in any one of the parallel branches 2. the sum of the currents through all the parallel branches 3. source voltage divided by the value of one of the resistive elements 4. source voltage divided by the sum of all the resistive elements

Which two electrical units multiplied together give the unit "WATTS":
1. volts and amperes 2. volts and farads 3. farads and henries 4. amperes and henries

A 12 volt light bulb is rated at a power of 30 watts. The current drawn would be:
1. 360 amperes 2. 18 amperes 3. 30/12 amperes 4. 12/30 amperes

The current flowing in a circuit is 10 mA. How many watts of power is dissipated by a circuit resistance of 100 kilohms:
1. 1 watt 2. 10 watts 3. 100 watts 4. 10,000 watts

A resistor in a circuit becomes very hot and starts to burn. This is because the resistor is dissipating too much:
1. current 2. voltage 3. resistance 4. power