Which of the following equation is the correct representation of Ohm’s law? (Where V = potential difference, I = current and R = resistance.) 

The correct answer is I = V/R.

Key Points

• Ohm's law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points.
• The formula representing Ohm's law is I = V/R, where I is the current, V is the voltage, and R is the resistance.
• This relationship implies that if the voltage is increased, the current will increase, provided the resistance remains constant.
• Conversely, if the resistance increases, the current will decrease for a given voltage.
• Ohm's law is fundamental in the field of electrical engineering and electronics, providing a basic relationship between voltage, current, and resistance.

Additional Information

• Resistance (R): It is a measure of the opposition to the flow of current in a conductor. It is measured in ohms (Ω).
• Voltage (V): Also known as electric potential difference, it is the force that pushes electric charge to flow in a circuit. It is measured in volts (V).
• Current (I): It is the rate of flow of electric charge in a circuit, measured in amperes (A).
• Conductors and Insulators: Conductors allow electric current to flow easily due to low resistance (e.g., metals), while insulators resist the flow of current due to high resistance (e.g., rubber).
• Applications of Ohm's Law: It is used in designing electrical circuits, troubleshooting electrical problems, and understanding the behavior of electrical components.