Difference between resistances in series and parallel.

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Sr.No. Resistances in Series Resistances in Parallel
1 Current remains constant in series connection. Potential difference remains constant in parallel connection.
2 $R_{e q} = R_{1} + R_{2} + R_{3}$ $\frac{1}{R_{e q}} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}$
3 If one component burns out, no current will flow through the circuit. If one connection burns out, still same current will flow through the circuit.

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Sr.No.	Resistances in Series	Resistances in Parallel
1	Current remains constant in series connection.	Potential difference remains constant in parallel connection.
2	$R_{e q} = R_{1} + R_{2} + R_{3}$	$\frac{1}{R_{e q}} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}$
3	If one component burns out, no current will flow through the circuit.	If one connection burns out, still same current will flow through the circuit.