ELECTRIC POTENTIAL AND POTENTIAL DIFFERENCE
RESISTANCE
It is a measure of the opposition to current flow in an electrical circuit. it's SI unit is ohm.
RESISTOR - It is a device that does not allow electric current to flow through it freely in a circuit
factors on which resistor depends
area of cross-section of the conductor
HEATING EFFECTS OF ELECTRIC CURRENT
When an electric current is passed through a conductor, it generates heat due to the hindrance caused by the conductor to the flowing current. The work done in overcoming the hindrance to the current generates heat in that conductor.
ELECTRIC POWER
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, joule per second
temperature of the conductor
It is a law stating that electric current is proportional to voltage and inversely proportional to resistance. Ohm's law states that the current I in a resistor is proportional to the potential difference V across it, provided that the temperature of the object is constant. In equation form, it says
R = V/I
A complete path through which an electric current can flow
POTENTIAL DIFFERENCE - The difference of electric potential between two points. Current flows from higher to lower potential.
ELECTRIC POTENTIAL - The electric potential is the amount of work energy needed to move a unit of electric charge from a reference point to the specific point in an electric field
Current is the flow of charge through a conductor per unit time. I = q/t