DC quiz(Basic Electicity)

The force which moves electrons is called

• electromotive force

• amperes

• magnamotive force

How many amperes will a 28-volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms each?

• 1 ampere.

• No answer text provided.

• 1.11 amperes.

• 25.23 amperes.

(Refer to Figure 20.) Troubleshooting an open circuit with a voltmeter as shown in this circuit will

• permit the battery voltage to appear on the voltmeter.

• permit current to flow and illuminate the lamp.

• create a low resistance path and the current flow will be greater than normal.

If three resistors of 3 ohms, 5 ohms, and 22 ohms are connected in series in a 28-volt circuit, how much current will flow through the 3-ohm resistor?

• 9.3 amperes.

• 0.93 ampere

• 1.05 amperes.

• No answer text provided

(Refer to Figure 21.) Which symbol represents a variable resistor?

• 1

• 2

• 3

(Refer to Figure 64.) A 48-volt source is required to furnish 192 watts to a parallel circuit consisting of three resistors of equal value. What is the value of each resistor?

• 4 ohms.

• 12 ohms.

• 36 ohms.

In a parallel circuit with four 6-ohm resistors across a 24-volt battery, what is the total voltage across resistor-three (VR3) in the circuit?

• 6 volts.

• 24 volts.

• 18 volts.

• No answer text provided.

What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?

• Voltage drop in the component(s) the switch is connected to.

•  

  Zero voltage.

•  

  System voltage.

•  

  No answer text provided.

What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?

• 0.93 ohm.

• No answer text provided.

• 1.07 ohms.

• 26 ohms.

(Refer to Figure 11.) Find the voltage across the 8-ohm resistor.

• 8 volts.

• 20.4 volts

• 24 volts

• No answer text provided.