# Shared Flashcard Set

## Details

Physics Current Electricity
Current Electricity Revision
21
Physics
01/08/2014

Term
 Current is..
Definition
 The rate of flow of charge
Term
 What is the this calculation used for working out? Q=It
Definition
 Charge
Term
 What is charge measured in?
Definition
 Coulombs
Term
 What is the symbol for charge?
Definition
 Q
Term
 Potential difference is...
Definition
 Energy per unit charge
Term
 What is voltage also know as?
Definition
 Potential difference or P.D
Term
 How do you work out charge?
Definition
 Q=W/V
Term
 Define a volt.
Definition
 A PD of a 1 volt across a component is when you have 1 joule of energy per coulomb of charge.
Term
 What 'is like the water flowing through a pipe'?
Definition
 Current, I.
Term
 How do you work out resistance?
Definition
 R=V/I
Term
 What is resistance measured in?
Definition
 Ohms
Term
 What is a characteristic of a ohmic conductor?
Definition
 Current is directly proportional to Voltage(P.D)
Term
 What feature does an ohmic conduct have on a Current Voltage graph?
Definition
 A straight line.
Term
 What is current measured in?
Definition
 Amps
Term
 How do you work out power when you have voltage and current?
Definition
 P=VI
Term
 How do you work out power when you have current and resistance?
Definition
 P=I(^2)R
Term
 How do you work out power when you have voltage and resistance?
Definition
 P=V(^2)/R
Term
 What is power measured in?
Definition
 Watts
Term
 How do you work out energy output?
Definition
 E=VIt
Term
 What is the simplified equation for working out energy?
Definition
 E=Pt
Term
 What is energy measured in?
Definition
 Joules per second.
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