NCCER Electrical
NCCER Electrical Module 3 (Intro To
Electrical Circuits) Exam Questions
& Answers
A circuit has a source voltage of 50v and a current of 10A, what is the power in watts? -
ANSWER ✔ - 500w
Voltage is defined as the? - ANSWER ✔ - driving force that makes current flow in a circuit
If a curcuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is? -
ANSWER ✔ - 240 volts
If two 10 ohm resistors are connected in series, what is the total resistance of the resistors? -
ANSWER ✔ - 20 ohms
To make sure the voltage is turned off before touching any terminals, use a? - ANSWER ✔ -
voltage tester
How many amos are there in the current of a circuit if the voltage source is 140v and the
resistance is 2 omhs - ANSWER ✔ - 70
Materials with electrical characteristics that fall between those of insulators and conductors are
considered? - ANSWER ✔ - semiconductors
1|P A G E
NCCER Electrical Module 3 (Intro To
Electrical Circuits) Exam Questions
& Answers
A circuit has a source voltage of 50v and a current of 10A, what is the power in watts? -
ANSWER ✔ - 500w
Voltage is defined as the? - ANSWER ✔ - driving force that makes current flow in a circuit
If a curcuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is? -
ANSWER ✔ - 240 volts
If two 10 ohm resistors are connected in series, what is the total resistance of the resistors? -
ANSWER ✔ - 20 ohms
To make sure the voltage is turned off before touching any terminals, use a? - ANSWER ✔ -
voltage tester
How many amos are there in the current of a circuit if the voltage source is 140v and the
resistance is 2 omhs - ANSWER ✔ - 70
Materials with electrical characteristics that fall between those of insulators and conductors are
considered? - ANSWER ✔ - semiconductors
1|P A G E
