Science: Electricity test
Battery, conducting path, load
Closed Circuit: A complete loop where electrons can flow from one terminal of the power source to the other, allowing current to pass through the circuit.
Open Circuit: A break in the path that stops the flow of current. This could be caused by a switch in the "off" position or a broken wire.
Current is the flow of electric charge (typically electrons) through a conducting path. It’s measured in amperes (A) or milliamperes (mA), where 1 A = 1 coulomb/second.
In a Series Circuit: Current is the same throughout all components because there’s only one path for it to follow. In a Parallel Circuit: The total current is the sum of the currents in all branches, but the current differs based on the resistance of each branch.
Voltage is a measure of electric potential difference between two points. It provides the "push" that drives electrons through a circuit. It’s measured in volts (V).The amount of voltage "used" or dropped across the components in a circuit equals the total voltage provided by the battery.
Electron Current (Real Current): Correctly describes the movement of electrons from the negative (-) terminal (anode) to the positive (+) terminal (cathode) in a circuit.
Conventional Current: Describes the flow of positive charge, even though it’s actually the electrons moving. This older convention is still used in most calculations.
Measures the electric potential difference (voltage) between two points in a circuit. It is connected in parallel and has high resistance to minimise the current it draws from the circuit.
Measures the current in a circuit. It is connected in series with the circuit to measure the flow of current directly, in amperes (A).
Battery, conducting path, load
Closed Circuit: A complete loop where electrons can flow from one terminal of the power source to the other, allowing current to pass through the circuit.
Open Circuit: A break in the path that stops the flow of current. This could be caused by a switch in the "off" position or a broken wire.
Current is the flow of electric charge (typically electrons) through a conducting path. It’s measured in amperes (A) or milliamperes (mA), where 1 A = 1 coulomb/second.
In a Series Circuit: Current is the same throughout all components because there’s only one path for it to follow. In a Parallel Circuit: The total current is the sum of the currents in all branches, but the current differs based on the resistance of each branch.
Voltage is a measure of electric potential difference between two points. It provides the "push" that drives electrons through a circuit. It’s measured in volts (V).The amount of voltage "used" or dropped across the components in a circuit equals the total voltage provided by the battery.
Electron Current (Real Current): Correctly describes the movement of electrons from the negative (-) terminal (anode) to the positive (+) terminal (cathode) in a circuit.
Conventional Current: Describes the flow of positive charge, even though it’s actually the electrons moving. This older convention is still used in most calculations.
Measures the electric potential difference (voltage) between two points in a circuit. It is connected in parallel and has high resistance to minimise the current it draws from the circuit.
Measures the current in a circuit. It is connected in series with the circuit to measure the flow of current directly, in amperes (A).
