Def : the energy or pushing force available to move electrons through a circuitUnit: volt (V)Symbol: VMeasured using an instrument called a voltmeter

= 1.5 volts3.0V?VIf

Def: difference between the charges at the beginning of a circuit and at the endCharges flow because of potential difference.

3.0 V0.0 V3.0 VBy the time a charge travels through a circuit it will essentially have lost its voltage or push

Def: how much the voltage decreases as it passes through each resistor on the way back to the negative end of the battery

The more light bulbs you have in a series circuit, the dimmer they are because they have to share voltage

Resistance is the tendency for materials to oppose the flow of electricity

Symbol: (R) Unit: ohm () Measured by an ohmmeterHigh resistance = insulators.Low resistance = conductors.

Anything using electricity is a resistor!!

Your TurnFind the voltage drop across the missing bulbs405

In a parallel circuit, the voltage drop across EACH resistor is equal to the total voltageLight bulbs wired in parallel have the same brightness!

Def : the rate of FLOW of electrons through a wireUnit: Amperes (amp)Symbol: IIt is measured using an ammeter

Current in a series circuit is the same for each resistor (light bulb).

Current is divided up between each path; Each path gets the necessary number of amps.

TYPES of CURRENTDirect Current (DC) flows in one directionEx. - BatteriesAlternating Current (AC) reverses back and forthEx. Household current

to Electrical CurrentWhich of the following do you think would be most resistant to electrical current?PlasticInsulatorConductorOR

Resistance is affected byLengthThe longer the wire, the greater the resistanceDiameterThe smaller the diameter, greater the resistanceMaterialPoor conductors have high resistanceTemperatureThe hotter the wire, the greater the resistance

ResistanceCurrentVoltageHow Fast?How much?How much is it slowed down?Match the word on the left to the phrase on the right.Ohms or RAMPS (I)Volts (V)

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