BASIC ELECTRONICS‎ ‎DISCRETE COMPONENTS‎ ‎RESISTOR‎

BASIC ELECTRONICS‎ ‎DISCRETE COMPONENTS‎ ‎RESISTOR‎ 

CONNECTING RESISTORS

Two or more resistor can be connected together in Series and Parallel. The resistance will be different depending on how they are connected. In Series When resistor are connected in Series, the overall resistance is increased. However, the current flowing through each resistor is the same. http://electronics-for-beginners.com/pages/page/2060/ The resistance is worked out by adding individual resistor values together. See textbook page 282 example for resistor connected in series calculation. In Parallel When resistor are joined in parallel, the combined resistance is reduced.  The voltage across both resistor are the same.  However, in parallel connection, the current flowing through each resistor depends on the resistance. http://www.radio-electronics.com/info/formulae/resistance/series-parallel-resistors-calculation-formula-equation.php See textbook page 283 example for resistor connected in parallel calculation. Ohm's Law For current to flow, there must be a voltage.  Ohm's law shows this relationship as :- Voltage (V)  =  Current (I)   x Resistance (R) When we know the voltage and current, we can use this formulae to calculate the resistance. Since current is set by the values of the voltage and resistance, using Ohms' law formula, it  can be shown that :- If we increase the voltage, current will increase. Increase in resistance, current will reduce. Click here to learn more about Ohm's Law Calculations. Go through all the pages and do the test. Click here to learn how to calculate current flowing through a circuit.