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Basic current charge

QuestionAnswer
Moving charge is called current
Charge is measured in Coulombs
Conventional current flows From positive to negative round a circuit
Charge can be moved round a circuit using a cell
More than one cell is called battery
The two types of charge are positive and negative
The charge carried by electrons is negative
Protons and some ions are charged positively
In a metal wire charge is carried by free electrons
The electrons drift in a wire when they experience the electrical force from the cell
The direction electrons move in a wire opposite to conventional current
A substance containing both free positive and negative charges is called an electrolyte
The coulomb is defined as that charge passing a point when 1 Amp flows for 1 second
The symbol for the quantity of current is I
The unit for current is Ampere (A)
The symbol for the quantity of Charge is Q
The unit for charge is Coulomb (C)
The equation linking charge and current ΔQ=IxΔt
If 200 C pass in 20 seconds the current is 10A
The charge on a single electron is 1.6 x10-19C
How many electrons are in 1C 6.25x1018
Created by: Kenb
 

 



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