Basic Knowledge

⚡ Voltage, current, and resistance are the most fundamental concepts for understanding electricity. Voltage (V) is the electrical pressure that causes current to flow, and current (A) is the amount of charge actually flowing. Resistance (Ω) is easily understood as the degree to which the flow of current is hindered. The relationship between these three is precisely Ohm's Law. V = IR For example, if you apply 20V to a 10Ω resistor, a current of I = 20/10 = 2A will flow. In other words, at the same voltage, the larger the resistance, the smaller the current, and the smaller the resistance, the larger the current. When studying electric circuits, properly understanding just this basic relationship will make it much easier to grasp how circuits work. ⚡