Electricity and Magnetism

Electricity and Magnetism

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Flashcard

Physics

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

the relationship between voltage, current, and resistance is called __________ Law

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.

2.

FLASHCARD QUESTION

Front

We buy power from utility companies in....

Back

Energy; kWh (kilowatt-hour) is the unit of energy used to measure electricity consumption.

3.

FLASHCARD QUESTION

Front

A SERIES circuit has 3 light bulbs. You remove 2 of the lightbulbs from the circuit and now have a complete circuit with 1 light bulb. Will the remaining light bulb be brighter, dimmer, or stay the same?

Back

Brighter. In a series circuit, removing bulbs increases the voltage across the remaining bulb, making it brighter.

4.

FLASHCARD QUESTION

Front

You can increase the strength of an electromagnet by increasing the current, adding iron to the core, and .....

Back

increasing the number of coils on the magnet. More coils create a stronger magnetic field.

5.

FLASHCARD QUESTION

Front

An electric current in a metal consists of moving __________

Back

electrons. In metals, electric current is carried by the flow of electrons.

6.

FLASHCARD QUESTION

Front

What is voltage?

Back

Voltage, measured in volts, is the electric potential difference between two points in a circuit.

7.

FLASHCARD QUESTION

Front

What is current?

Back

Current, measured in amperes (amps), is the flow of electric charge in a circuit.

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