Mod 3 Electrical Circuits

How is current measured with an in-line type meter?

• a. By placing an ammeter in series with the circuit
• b. By placing a voltmeter in parallel with the circuit
• c. By using a continuity tester
• d. By using an ohmmeter

A circuit has a source voltage of 50V and a current of 10A. What is the power in watts?

• 100
• 250
• 500
• 1,500

Voltage is defined as the _____.

• a. force that causes electrons to flow
• b. opposition to current flow
• c. basic unit in which current is measured
• d. current flowing through a conductor

If a circuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is _____.

• 120V
• 240V
• 270V
• 380V

If two 10-ohm resistors are connected in series, what is the total resistance of these resistors?

• 100 ohms
• 20 ohms
• 5 ohms
• 1 ohm

Make sure the voltage is turned off before touching any terminals by using a(n) _____.

• a. continuity tester
• b. ammeter
• c. ohmmeter
• d. voltage tester

How many amps are there in the current of a circuit if the voltage source is 140V and the resistance is 2 ohms?

• 12A
• 70A
• 160A
• 280A

Materials with electrical characteristics that fall between those of insulators and conductors are considered _____.

• a. charged
• b. magnetic
• c. semiconductors
• d. stable

What is the applied voltage if the current in a circuit is 60 amps and the resistance is 10 ohms?

• a. 6 volts
• b. 60 volts
• c. 600 volts
• d. 6,000 volts

Copper is considered a(n) _____.

• a. semiconductor
• b. insulator
• c. conductor
• d. semi-insulator