Unit 6: Test Answers
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Badri makes the table below to review the factors that affect the electric force between objects.
A
changing “Direct” to “Indirect”B
changing “Indirect” to “Direct”C
changing “Distance” to “Amount of electric charge”D
changing “Mass” to “Amount of electric charge”24
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How are the electric field lines around a positive charge affected when a second positive charge is near it?
A
The field lines combine with the lines around the second positive charge.B
The field lines overlap with the lines from the second positive charge.C
The field lines bend toward the second positive charge.D
The field lines bend away from the second positive charge.25
A circuit has a current of 1.2 A. If the voltage decreases to one-third of its original amount while the resistance remains constant, what will be the resulting current?
A
0.3 AB
0.4 AC
1.2 AD
3.6 A26
What are used to transfer electrical energy from a power plant all the way to a home?
A
generatorsB
turbinesC
power transformersD
power lines27
Lucas makes a graphic organizer to compare ways electrical energy is produced.
A
X: Uses turbines to turn generatorsY: Boils water to form steamB
X: Boils water to form steamY: Uses turbines to turn generatorsC
X: Uses uraniumY: Uses falling water to turn turbinesD
X: Uses generators to produce electrical energyY: Burns fuel to form steam28
A 40 W bulb is left on from 9:00 p.m. to 6:30 a.m.
A
0.10 kWhB
0.38 kWhC
100 kWhD
380 kWh29
A gas water heater is 75% efficient. The energy output used to heat the water is 4.6 kWh.
A
3.5 kWhB
5.4 kWhC
6.1 kWhD
16.3 kWhDid you find these answers helpful?
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