Energy and Electricity Test

Which schematic diagram shows 2 batteries in parallel formation?

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Which circuit would you build if you wanted to measure the voltage of a fan?

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What claim(s) can you make about this picture?

• The resistor on the right has less resistance because it has more coils inside.
• The resistor on the right has more resistance because it has more coils inside.
• The resistor on the left has more resistance because it has less coils inside.
• The resistor on the left has less resistance because it has more coils inside.
• The resistor on the left has less resistance because it has less coils inside.

According to the chart below, which statement is the MOST true?

• 20-gauge nichrome wire is the best option to use for resistance.
• 20-gauge copper wire is the best option to use in homes.
• 22-gauge nichrome wire is the most resistant wire on this chart.
• 20-gauge nichrome wire should not be used as a resistor.

Which combination are these batteries?

• series
• parallel
• series-parallel

According to this chart, what is the resistance of this resistor in Ohms? (stripes from left to right are brown, black, orange, gold)

• 10 Ohms
• 100 Ohms
• 1000 Ohms
• 10,000 Ohms

You want to increase the strength of your electromagnet, what are some things you can do?

• Decrease the length of the wire
• Decrease the size of your battery
• Increase the number of coils
• Increase the size of your battery

What claim(s) can you make about this picture?

• Chemical reactions take place in the electrolyte solution, causing electrons to move.
• Electrons flow from the zinc strip to the copper strip, causing electrical current to flow to the light bulb.
• Electrons flow from the copper strip to the zinc strip, causing electrical current to flow to the light bulb.
• Chemical reactions take place in the water, causing electrons to move.

Which wire would you choose if you wanted the LEAST amount of resistance in your circuit?

• A
• B
• C
• D
• A & D

Which picture shows a series circuit?

• Circuit A
• Circuit B