Current refers to the flow of electric charge in a circuit. It is measured in units called amperes (A) and is represented by the symbol "I".
An electric circuit is a path through which electric current can flow. It typically consists of a source of electricity (such as a battery), conductors to carry the current, and a load (such as a light bulb) that uses the current.
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them. It is represented by the equation I = V/R, where I is current, V is voltage, and R is resistance.
Resistance is a measure of how much a material or component impedes the flow of electric current. It is measured in units called ohms (Ω) and is represented by the symbol "R". Conductors have low resistance, while insulators have high resistance.
According to Ohm's law, as resistance increases, current decreases for a given voltage. This means that a higher resistance in a circuit will result in a lower current, and vice versa.