What is required for a current to flow in a circuit? Select all correct answers Potential difference Resistance Switch Protons Clos

## Step 1:In order for current to flow in a circuit, there must be a potential difference or voltage. This is the driving force that pushes the charge around the circuit. Without a potential difference, there would be no flow of charge, hence no current.## Step 2:Resistance is also required in a circuit for current to flow. Resistance is a measure of the opposition to current flow in an electrical circuit. It controls the amount of current flowing in the circuit. If there is no resistance, the current would be infinitely high, which is not practical.## Step 3:A switch is not necessarily required for a current to flow in a circuit. It is used to control whether the current flows or not. Therefore, it is not a requirement for the current to flow.## Step 4:Protons are not required for a current to flow in a circuit. In metallic wires, it is the electrons that move and constitute the current. Protons are positively charged and reside in the nucleus of atoms, they do not move.### The formula for current is , where is the current, is the voltage or potential difference, and is the resistance.