Electricity

Front

What is a battery?

Back

A battery is a device that stores chemical energy and converts it to electrical energy. It provides direct current (DC), not alternating current (AC).

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, often caused by friction. Examples include clothes clinging together and lightning.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Front

What charge does an electron have?

Back

An electron has a negative charge (-).

Tags

NGSS.MS-PS2-3

Front

What is resistance in electricity?

Back

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

Front

What unit is electric current measured in?

Back

Electric current is measured in amperes (A).

Front

What is alternating current (AC)?

Back

Alternating current (AC) is an electric current that reverses direction periodically, commonly used in household power supply.

Front

What is direct current (DC)?

Back

Direct current (DC) is an electric current that flows in one direction only, commonly used in batteries.

Front

What is voltage?

Back

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

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). It can be expressed as V = I × R.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load.