Current, Potential Difference and Resistance
Current, Potential Difference and Resistance
Videos and Notes which teach you everything you need to know
Flash Mode: Quick Videos for cramming
Revision Mode: Self Paced Videos with Full Notes
Also known as VOLTAGE, potential difference is the measure of ENERGY per unit of CHARGE, transferred between two points in a circuit.
Simply put, this is the driving force that PUSHES the current around the circuit.
Units: VOLTS (V).
RESISTANCE in a circuit SLOWS down the flow of CURRENT.
The HIGHER the resistance in a circuit, the LOWER the current, if the potential difference stays the same.
Units: OHMS (Ω).
The relationship between current, resistance, and potential difference can be understood by OHM'S LAW, which states that the CURRENT is DIRECTLY PROPORTIONAL to the POTENTIAL DIFFERENCE.
A conductor that obeys this law is known as an OHMIC CONDUCTOR.
Here's the fundamental formula you'll need:
Also known as VOLTAGE, potential difference is the measure of ENERGY per unit of CHARGE, transferred between two points in a circuit.
Simply put, this is the driving force that PUSHES the current around the circuit.
Units: VOLTS (V).
RESISTANCE in a circuit SLOWS down the flow of CURRENT.
The HIGHER the resistance in a circuit, the LOWER the current, if the potential difference stays the same.
Units: OHMS (Ω).
The relationship between current, resistance, and potential difference can be understood by OHM'S LAW, which states that the CURRENT is DIRECTLY PROPORTIONAL to the POTENTIAL DIFFERENCE.
A conductor that obeys this law is known as an OHMIC CONDUCTOR.
Here's the fundamental formula you'll need:
