Electrical Resistance Measurement Quiz

Resistance is measured in units of __________.

• volts

• watts

• ohms

• amps

A(n) __________ is used to measure resistance.

• ohmmeter

• ammeter

• voltmeter

• flow meter

Which of the following statements does not accurately describe a part of the process of measuring the resistance of a component that is connected in a circuit?

• Turn off the power supply.

• Disconnect one of the component leads from the circuit.

• Make sure the power supply is on.

• Connect the leads across the component.

To find the total resistance in a series circuit, __________.

• multiply the individual resistances

• average the resistances

• add the individual resistances

• subtract the individual resistances

Which of the following is a formula for calculating total resistance in a parallel circuit?

• RT = ET × IT

• RT=R1+R2 + R3

• RT = 1/(1/R1 + 1/R2 + 1/R3)

• All of the above

• None of the above

Ohm's Law for calculating voltage is __________.

• E = I × R

• E = P × R

• E = P × I × R

• All of the above

• None of the above

Which is not an application of Ohm's Law?

• Troubleshooting circuits

• Sizing components

• Creating multiple voltage levels

• All of the above

• None of the above

If a wire has continuity, it __________.

• cannot conduct current

• has a complete path for current to flow

• cannot be used in a circuit

• has a short

Where there is no continuity found when testing with a DMM, the screen may display this.

• OL

• 0

• VΩ

• Null