Electricity 10SCI

Electricity

The flow of electric charge (electrons)

Current

A flow of charged particles such as electrons or ions moving through an electrical conductor. (Measured in amperes/amps, I)

Voltage

The push or pressure that moves electric charge through a circuit. It is measured in volts (V).

Power

The rate at which electrical energy is used or produced. It tells you how fast energy is being transferred and is measured in watts/joules per second (W), (Js^-1).

Couloumbs

A unit that measures electric charge. One coulomb is the amount of charge that flows when one amp of current moves for one second.

Watts

A unit of power. One watt means one joule of energy is being used each second.

Joules

A unit of energy. It measures how much energy is used or transferred.

Series Circuit

A type of circuit where components are connected one after the other in a single loop. The current is the same at any point in the circuit.

Parallel Circuit

A circuit where components are connected on separate branches. The current is shared out between branches.

What is the basic formula to find power?

Power = Energy over Time. (P=E/t)

What is the electrical formula to find power?

Power = Voltage x Current (P=VxI)

What is the formula to find voltage?

Voltage = Current x Resistance (V=IxR)

What is the relationship between voltage and current?

As voltage (V) is increased, the current (I) is also increased. This is an example of a linear relationship, where resistance is a constant.

What is the cost for one kJ?

$0.002

What is the relationship between voltage and current in regards to power?

As voltage increases, the current also increases. This consequently also increases the circuit’s power.

What does CUTLASS stand for?

Crosses, Units, Title, Labels, Axes, Size and Scale