Introduction
The purpose of the experiment was to study Ohm’s law and to investigate the relationship between current and voltage in metal wire, lamp filament and diode.
Theory
Electric current (I) is defined as the rate at which charges flow through a conductor. Current flows when a conductor is connected to a power supply in a complete circuit. The battery provides the energy needed to move the charges through a conductor. The energy supplied by battery per unit charge is called voltage. Voltage is a measure of electrical potential difference between two points in a circuit. The potential difference between two terminals of a power supply is referred ...
