A-Level Physics Revision - Electricity Term 0.5

Front

What is electric current?

Back

The rate of flow of charge.

Front

What is charge measured in?

Back

Coulombs.

Front

What is resistance?

Back

A measure of how much energy it takes for current to flow through a material.

Front

State Kirchhoff's First Law.

Back

For any point in an electrical circuit, the sum of currents into that point equals the sum of currents out of that point.

Front

What happens to energy consumption as resistance increases?

Back

The more energy it takes to push electrons through the component.

Front

What is the unit of resistance?

Back

Ohm.

Front

What is Ohm's Law?

Back

V = I × R, where V is voltage, I is current, and R is resistance.

Front

What is the relationship between voltage, current, and resistance?

Back

Voltage is directly proportional to current and resistance.

Front

Define voltage.

Back

The electric potential difference between two points.

Front

What is a series circuit?

Back

A circuit where components are connected end-to-end, so the same current flows through all components.