Electricity - Practice Test for Phy Sci

Front

What is electric current?

Back

Electric current is the flow of electric charge, typically measured in amperes (amps).

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.

Front

What is the formula for calculating current?

Back

Current (I) = Voltage (V) / Resistance (R).

Front

What happens to current when resistance increases?

Back

When resistance increases, the current decreases if the voltage remains constant.

Front

What is a conductor?

Back

A conductor is a material that allows electric charges to flow through it easily, such as copper or aluminum.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of electric current, such as rubber or glass.

Front

What is static electricity?

Back

Static electricity is the buildup of electric charge on the surface of objects, often caused by friction.

Front

What is the role of protons in an atom?

Back

Protons are positively charged particles in the nucleus of an atom that determine the element's identity.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Front

What is voltage?

Back

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