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Homework exercises on Direct Current Electricity for a Physical Science course. Also refer to physics, static electricity, AC, DC, magnetism, Edison, courseware, Ron Kurtus, School for Champions. Copyright © Restrictions

DC Electricity - Homework

INSTRUCTIONS: Print out a copy of this homework assignment, answer the questions correctly, and send the homework to your instructor.

YOUR NAME:

1. What determines if an atom has a negative charge? A positive charge?

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2. Name a good insulator of electricity. Name a good conductor of electricity.

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3. Comparing electric current to the flow of water in a hose, what is a Volt equivalent to in the water hose? How could you increase the "voltage" in a hose?

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4. What is an Ampere equivalent to in the hose? How could you increase the "amps" in a hose?

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5. How do you increase the resistance in a wire?

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6. What is the relationship between current, voltage and resistance in a simple electric current?

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7. If a 9 volt battery lights a bulb of 4.5 ohms, how much current flows through the bulb?

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8. Why are Christmas lights in a parallel circuit better than in a series circuit?

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9. What is the most common source of direct current?

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10. What device could you use to measure voltage?

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