Physics - Electricity 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: 14SnellingJ029Created on: 13-11-18 18:18 Current definition A flow of electrical charge 1 of 13 Unit for current Ampere/ Amp (A) 2 of 13 The current in a closed loop is ____ The current in a closed loop is the same 3 of 13 Potential Difference definition The driving force that pushes the charge round 4 of 13 Unit for voltage Volt (V) 5 of 13 Resistance definition Anything that slows the current down 6 of 13 Unit for resistance Ohm 7 of 13 What is the formula for charge? Q= IT / Charge = Current x time 8 of 13 What is the equation for Potential Difference? Potential Difference = current x resistance or V = IR 9 of 13 What does the ammeter do? Measures the number of amps of the position it's placed 10 of 13 What does a voltmeter do? Measures the Potential Difference across the wire. 11 of 13 Should a voltmeter be placed in series or parallel? What about an ammeter? Amneter - in series Voltmeter - parallel 12 of 13 LDR (Light-dependent Resistor) definition Is dependent on light. In bright light resistance falls, in dark light resistance increases 13 of 13
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