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Physics Current Electricity
Current Electricity Revision
21
Physics
11th Grade
01/08/2014

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Cards

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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