PS 7.3 Flashcard

Front

What is electromagnetic induction?

Back

Electromagnetic induction is the process of generating electric current in a conductor by changing the magnetic field around it.

Front

How is electric current produced by moving a magnet?

Back

Electric current is produced by moving a magnet through a wire loop, which induces a flow of electrons in the wire.

Front

What is the role of a generator in electricity production?

Back

A generator converts mechanical energy into electrical energy, producing electric current.

Front

What is a transformer used for?

Back

A transformer is a device that increases or decreases the voltage of alternating current (AC).

Front

Why is alternating current (AC) commonly used in power plants?

Back

Alternating current is used because its voltage can be easily increased or decreased with a transformer, making it efficient for long-distance transmission.

Front

What is the difference between direct current (DC) and alternating current (AC)?

Back

Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically.

Front

What is the function of a turbine in electricity generation?

Back

A turbine converts mechanical energy from steam or water into rotational energy, which drives a generator to produce electricity.

Front

What is the significance of voltage in electrical systems?

Back

Voltage is the measure of electric potential difference, which drives the flow of electric current in a circuit.

Front

How does a galvanometer work?

Back

A galvanometer measures small electric currents by detecting the magnetic field produced by the current.

Front

What is mechanical energy?

Back

Mechanical energy is the energy associated with the motion and position of an object.