Lesson 6, Topic 2
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# Parallel Arrangement of Resistors

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Resistors are said to be parallel if they are placed side by side with their ends joined together in such a way that the potential difference across each resistors is the same but the current in each resistor is not the same.

Let’s say that the light bulbs (resistors) from the previous topic are now connected together in parallel. A single charge passing through the external circuit would only pass through one of the light bulbs. The light bulbs are placed within a separate branch line.

The total resistance of the resistor is given by the formula;

$$\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3}$$

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