Charge and Current
Charge and Current
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A circuit works when CHARGE is allowed to FLOW through it.
Usually these charges are free moving ELECTRONS or IONS.
Units: COULOMBS (C)
ELECTRIC CURRENT is the FLOW of electric CHARGE, quantified by the amount of charge passing a point in the circuit over time.
One of the key characteristics of current in a single closed loop is that it has the SAME VALUE at any point in the loop.
Units: AMPERES (A)
Current always flow AWAY from the POSITIVE side of the cell (the LONGER line)
The relationship between charge flow, current, and time is expressed by the equation:
Where:
A circuit works when CHARGE is allowed to FLOW through it.
Usually these charges are free moving ELECTRONS or IONS.
Units: COULOMBS (C)
ELECTRIC CURRENT is the FLOW of electric CHARGE, quantified by the amount of charge passing a point in the circuit over time.
One of the key characteristics of current in a single closed loop is that it has the SAME VALUE at any point in the loop.
Units: AMPERES (A)
Current always flow AWAY from the POSITIVE side of the cell (the LONGER line)
The relationship between charge flow, current, and time is expressed by the equation:
Where:
