Electricity Lab Quiz

When building a circuit, how can you determine the expected total circuit voltage?

• By measuring it with an ammeter.
• By adding the voltage of all the batteries.
• By checking the total amps of the circuit.
• By calculating the ohms.

What should is the approximate voltage of the circuit you built with two bulbs, three 1.5V batteries, one switch, and the voltmeter, where the voltmeter was in parallel to one of the light bulbs?

• 1.5 volts
• 2.5 volts
• 3.5 volts
• 4.5 volts

Attached is a picture of the series circuit you built with voltmeters measuring voltage of one lightbulb and one measuring two lightbulbs. What does this tell you about the brightness of the lightbulbs as you add more to the circuit?

• The brightness of the lightbulbs increases as more are added to the circuit.
• Adding more lightbulbs has no effect on their brightness.
• The brightness of the lightbulbs fluctuates randomly regardless of how many are added.
• The brightness of the lightbulbs decreases as more are added to the circuit.

Attached is a picture of the parallel circuit you built with voltmeters measuring voltage of one lightbulb and one measuring two lightbulbs AND with ammeters measuring the current of the full circuit and of just one branch.

What does the VOLTAGE tell you about the brightness of the lightbulbs as you add more to the circuit?

• The brightness of the lightbulbs increases as more are added.
• The brightness of the lightbulbs decreases as more are added.
• The voltage across each lightbulb becomes zero as more are added.
• The brightness of the lightbulbs remains constant as more are added.

Which of the following circuits did you NOT build in lab?

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Tags

NGSS.MS-ETS1-1

Match the picture with the circuit name from lab

• Voltage in Series Circuits

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• Measuring Voltage of Battery

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• Voltage and Amps in Parallel Circuits

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• Plain Series Circuit

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• Series Measuring Amps

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Tags

NGSS.MS-ETS1-1

What is the most accurate way to measure the voltage in a circuit?

• Estimate voltage by adding the voltage for each battery.

• Use a voltmeter with a broken display.
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