# Charge and Energy in Circuits

__Charge in Circuits__

**Electrons** travel around a circuit > electricity. Each electron carries energy with it. Each electron has a **negative charge**

Electrical charge is measured in coulomb, C. The amount of electrical charge that moves in a circuit depends on the current flow and how long it flows for.

**charge (coulomb, C) = current (ampere, A) × time (second, s)**

__Energy in Circuits__

**Energy**

- Energy is the flow of energy around the circuit
- Measured in
**Joules**

**Voltage**

- Voltage is the driving force that pushes electrons
- Symbol
**V** - Measured in
**Volts**(electrical pressure)

For a given amount of electrical charge that moves, the amount of energy transformed increases as the potential difference (voltage) increases.

**energy transformed (joule, J) = potential difference (volt, V) × charge (coulomb, C)**

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