# Technician Class Exam Question Pool

effective 7/01/2010 thru 6/30/2014

 Show: Unseen questions Weak questions Review questions Learned questions Incorrect answer choices

T5D-2010: Ohm's Law

T5D01: What formula is used to calculate current in a circuit?

Current (I) equals voltage (E) divided by resistance (R)

Current (I) equals voltage (E) multiplied by resistance (R)

Current (I) equals voltage (E) added to resistance (R)

Current (I) equals voltage (E) minus resistance (R)

T5D02: What formula is used to calculate voltage in a circuit?

Voltage (E) equals current (I) multiplied by resistance (R)

Voltage (E) equals current (I) divided by resistance (R)

Voltage (E) equals current (I) added to resistance (R)

Voltage (E) equals current (I) minus resistance (R)

T5D03: What formula is used to calculate resistance in a circuit?

Resistance (R) equals voltage (E) divided by current (I)

Resistance (R) equals voltage (E) multiplied by current (I)

Resistance (R) equals voltage (E) added to current (I)

Resistance (R) equals voltage (E) minus current (I)

T5D04: What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?

30 ohms

3 ohms

93 ohms

270 ohms

T5D05: What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

8 ohms

18 ohms

0.125 ohms

13.5 ohms

T5D06: What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

3 ohms

16 ohms

48 ohms

8 Ohms

T5D07: What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

1.5 amperes

9600 amperes

200 amperes

0.667 amperes

T5D08: What is the current flowing through a 100-ohm resistor connected across 200 volts?

2 amperes

20,000 amperes

0.5 amperes

100 amperes

T5D09: What is the current flowing through a 24-ohm resistor connected across 240 volts?

10 amperes

24,000 amperes

0.1 amperes

216 amperes

T5D10: What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

1 volt

0.25 volts

2.5 volts

1.5 volts

T5D11: What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

10 volts

1 volt

11 volts

9 volts

T5D12: What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

20 volts

8 volts

0.2 volts

12 volts

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