GR7 4THQTR IA Electrical Measurements Quiz PART 1

What is the unit of measurement for voltage?

• Amperes (A)

• Ohms (Ω)

• Volts (V)

• Watts (W)

Which instrument is used to measure current in a circuit?

• Voltmeter

• Ammeter

• Ohmmeter

• Multimeter

According to Ohm’s Law, what is the formula to calculate resistance?

• R = V × I

• R = V / I

• R = I / V

• R = V + I

What is the definition of current in an electrical circuit?

• The opposition to the flow of electric current

• The electrical potential difference between two points

• The flow of electric charge

• The power consumed by a circuit

If the voltage in a circuit is 12V and the resistance is 4Ω, what is the current?

• 2A

• 3A

• 4A

• 6A

Which of the following is used to measure resistance?

• Voltmeter

• Ammeter

• Ohmmeter

• Wattmeter

What is the voltage if the current is 5A and the resistance is 10Ω?

• 2V

• 15V

• 50V

• 100V

What is the first step in measuring voltage using a voltmeter?

• Connect the probes in series with the circuit

• Set the voltmeter to the correct voltage range

• Disconnect power from the circuit

• Read the voltage on the display

What is the resistance if the voltage is 30V and the current is 6A?

• 5Ω

• 10Ω

• 15Ω

• 20Ω

Which of the following statements is true according to Ohm’s Law?

• Current is inversely proportional to voltage

• Current is directly proportional to resistance

• Current is directly proportional to voltage

• Resistance is directly proportional to current