Test for 4/11/2023

• Ohm's law - the potential difference across a conductor is directly proportional to the current in the component as long as its temperature remains constant
• Resistance - a property of a component calculated by dividing the potential difference across it by the current in it, symbol R, unit ohm
• Electric current - the rate of flow of charge, symbol I, measured in amperes, A; normally a flow of electrons in metals or a flow of ions in electrolytes
• Electromotive force (e.m.f) - defined as the energy transferred from chemical to electrical energy per unit charge
• The ohm - the resistance of a component when a potential difference of 1V is produced per ampere of current