Name:

Current, Voltage and Resistance

Current is a flow of around the .
Electric current can only flow if there are like in a , where electrons flow throughout the structure of charged ions.

The in a circuit flows from to .
Electrons flow in the the flow of "conventional current".

Resistance

Complete this table:

 Voltage (V) Current (A) Resistance (Ohms) 2 6 230 23 6 3 1.5 15 12 4 1.5 5

Choose which graph best represents the labeled components:

 . Diode filament bulb fixed value resisitor . Diode filament bulb fixed value resisitor . Diode filament bulb fixed value resisitor Long and short wire The graph with the steeper slope is the . longer shorter wire of the same material as it has a . higher lower resistance. Thick and thin wire The graph with the steeper slope is the . thick thin wire of the same material as it has a . higher lower resistance.

Match the words with their correct description:

 current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Unit of charge current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Measures voltage current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) More current will flow current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Metal wire of high resistance current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Reduces current flow current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Measures current current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Ions dissolved in water current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Allows current to flow in one direction only current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Unit of voltage current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Unit of power current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Metal wire of low resistance current resistance coulomb diode watt (W) electrolyte voltage increase amp (A) ammeter nichrome voltmeter increase the resistance copper volt (V) Less current will flow