Physical Science Exam Review

Front

Does this diagram represent a parallel circuit or a series circuit?

Back

Series circuit: A circuit in which the components are connected end-to-end, so that the current flows through each component in turn.

Front

A _________________ is a material through which electrons move easily.

Back

Conductor: A material that allows the flow of electric charge, typically metals like copper and aluminum.

Front

_________ is the accumulation of excess electric charge on an object.

Back

Static Electricity: A stationary electric charge that is typically produced by friction, causing sparks or attraction to other objects.

Front

Is this battery classified as a dry-cell or a wet-cell battery?

Back

Wet-Cell Battery: A type of battery that contains liquid electrolytes, commonly used in car batteries.

Front

What is the unit for Electrical Power?

Back

Watts (W): The unit of power in the International System of Units (SI), representing the rate of energy transfer.

Front

What is the difference between a conductor and an insulator?

Back

Conductor: A material that allows electricity to flow easily. Insulator: A material that resists the flow of electricity.

Front

What is Ohm's Law?

Back

Ohm's Law: A fundamental principle stating 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). Formula: V = I × R.

Front

What is the function of a circuit breaker?

Back

Circuit Breaker: A safety device that automatically stops the flow of electricity in a circuit when it detects an overload or short circuit.

Front

What is the role of a resistor in a circuit?

Back

Resistor: A component that limits the flow of electric current in a circuit, used to control voltage and current levels.

Front

What is the difference between AC and DC current?

Back

AC (Alternating Current): An electric current that reverses direction periodically. DC (Direct Current): An electric current that flows in one direction only.