Electricity and Magnetism Mastery Flashcard

Front

What are magnetic field lines?

Back

Magnetic field lines are visual representations of the magnetic field around a magnet. They indicate the direction of the magnetic force, going from the north pole to the south pole, and they never intersect each other.

Front

What is a characteristic of magnetic field lines?

Back

Magnetic field lines form closed loops and are closest together where the magnetic field is strongest, not weakest.

Front

What causes magnetism?

Back

Magnetism is caused by moving charges, such as electrons in motion.

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Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

Front

What device converts mechanical energy into electrical energy?

Back

A generator converts mechanical energy into electrical energy.

Front

What happens when two south poles of magnets are brought together?

Back

Two south poles will repel each other.

Tags

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NGSS.MS-PS2-5

Front

What is the relationship between electric current and voltage?

Back

Electric current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R), as described by Ohm's Law: I = V/R.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Tags

NGSS.MS-PS2-3

Front

What is the difference between a motor and a generator?

Back

A motor converts electrical energy into mechanical energy, while a generator converts mechanical energy into electrical energy.

Front

What is resistance in an electrical circuit?

Back

Resistance is a measure of the opposition to the flow of electric current, measured in Ohms (Ω).