Ages 11–12🔬 Science12 verified questions on this shelf

Current, voltage, and what they measure

Understand that electric current is the rate of flow of charge (measured in amperes using an ammeter), and that potential difference (voltage) is the energy transferred per unit charge (measured in volts using a voltmeter)

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Question 1 of 3

A student records the magnetic force between two identical bar magnets placed at different distances, as shown in the table below. Distance (cm)Magnetic force (N)28.042.060.9 The force decreases as the distance increases. Which question would best help the student determine the factor that most affects the strength of the magnetic force?

Question 2 of 3

Students measured the magnetic force between two identical bar magnets at three different separations. The data are: Separation (cm)Force (N)20.8040.2060.09 Based on this data, which of the following changes would most increase the magnetic force between the magnets?

Question 3 of 3

A battery moves 30 J of energy to each coulomb of charge that passes through it. What is the potential difference (voltage) across the battery?

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Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.