Circuits GapFill

Electricity is used for a wide variety of applications, from the computer you're using right now, to lighting, music, cars and industrial processes. For an electrical circuit to function it needs  a batterya high resistancea power sourcean alternating currenta closed loop and a power sourcea closed loop.
We discuss electricity in terms of current, which is  the power dissipated by the circuitthe magnetic field generated around the circuitthe energy carried around the circuithow much the circuit opposes the flow of chargethe rate of flow of chargethe energy carried per charge, potential difference, which is  the magnetic field generated around the circuitthe rate of flow of chargehow much the circuit opposes the flow of chargethe power dissipated by the circuitthe energy carried around the circuitthe energy carried per charge, and resistance, which is  the energy carried per chargethe rate of flow of chargehow much the circuit opposes the flow of chargethe energy carried around the circuitthe power dissipated by the circuitthe magnetic field generated around the circuit.
Current has units of  ohms (Ω)watts (W)volts (V)joules (J)amps (A)coulombs (C). Potential difference has units of  ohms (Ω)watts (W)volts (V)coulombs (C)joules (J)amps (A). Resistance has units of  watts (W)ohms (Ω)coulombs (C)amps (A)joules (J)volts (V).
Components are placed in a circuit and may have different properties depending on current and potential difference.
 A voltmeterAn LDRA filament bulbA diodeA thermistorAn ohmic conductor has a constant resistance, no matter the current through it or the potential difference across it.
The resistance of  a diodea thermistora filament bulban ohmic conductoran LDRa voltmeter increases with the current through it, as the component heats up.
 An ohmic conductorA diodeA filament bulbAn LDRA thermistorA voltmeter only allows current to flow through in one direction.
The resistance of  a voltmeteran LDRa diodea thermistoran ohmic conductora filament bulb changes with how much light it is exposed to.
When components are arranged along the same loop of a circuit, they are in  oppositiongroundparallelpotentialseriesresistance; if components are arranged along different loops of the same circuit, they are in  parallelresistanceoppositionseriespotentialground.