What is the relationship between current, voltage, and resistance?

Current, voltage, and resistance are related by Ohm's Law, which states that current is equal to voltage divided by resistance.

Ohm's Law is a fundamental principle in the study of electricity. It is named after the German physicist Georg Simon Ohm who first formulated it in 1827. The law is usually expressed in the formula I=V/R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.

Current, represented by the symbol 'I', is the flow of electric charge. It is measured in amperes (A). The greater the number of charges that pass through a point in a circuit per unit of time, the greater the current.

Voltage, represented by the symbol 'V', is the electrical force that drives the current around the circuit. It is also known as potential difference and is measured in volts (V). The greater the voltage, the greater the force pushing the charges through the circuit, and hence the greater the current.

Resistance, represented by the symbol 'R', is a measure of the opposition to the flow of current in a circuit. It is measured in ohms (Ω). The greater the resistance, the more difficult it is for the current to flow, and hence the smaller the current for a given voltage.

In summary, Ohm's Law describes the relationship between current, voltage, and resistance in an electrical circuit. It states that the current flowing in a circuit is directly proportional to the voltage and inversely proportional to the resistance. This means that if you increase the voltage, the current will increase, and if you increase the resistance, the current will decrease. It's a fundamental concept that you'll use frequently in your studies of physics.