Voltage, Current, Resistance

Front

What is Voltage?

Back

Voltage is the electric potential difference between two points in a circuit, measured in volts (V). It represents the energy per unit charge available to move electrons through a circuit.

Front

What is Current?

Back

Current is the flow of electric charge in a circuit, measured in amperes (A). It represents the rate at which charge is flowing.

Front

What is Resistance?

Back

Resistance is the opposition to the flow of electric current, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is an Insulator?

Back

An insulator is a material that does not allow electric current to flow easily. Examples include rubber, glass, and plastic.

Front

What is a Conductor?

Back

A conductor is a material that allows electric current to flow easily. Examples include metals like copper and aluminum.

Front

How do you calculate Voltage?

Back

Voltage (V) = Current (I) x Resistance (R) or V = I x R.

Front

How do you calculate Current?

Back

Current (I) = Voltage (V) ÷ Resistance (R) or I = V ÷ R.

Front

How do you calculate Resistance?

Back

Resistance (R) = Voltage (V) ÷ Current (I) or R = V ÷ I.

Front

What happens to current when resistance increases?

Back

As resistance in a circuit increases, the electric current decreases, assuming voltage remains constant.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor.