Question

derive the resistance in series combination​

Answer 1

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Answer 2

Heya ...

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Resistance can be joined to each other by two ways:

    1. Series combination

    2. Parallel combination

SERIES COMBINATION :

     Characteristics:    1. If different resistances are joined with each other such that there is only one path for the flow of       electric current then the combination of such resistances is called Series Combination. 

    2. In series combination current through each resistor is constant. 

    3. In series combination Potential difference across each resistor is different depending upon the value of         resistance. 

    4. Equivalent resistance of circuit is equal to the sum of individual resistances.

Re = R1 + R2 + R3 + R4 + …………….. Rn

DISADVANTAGE :

     If one component is fused, then the other components of circuit will not function.    For latest information , free computer courses and high impact notes visit :www.citycollegiate.com 

EQUIVALENT RESISTANCE IN SERIES COMBINATION :

     Consider three resistances R1, R2, & R3 connected in series combination with a power supply of voltage.    Potential difference of each resistor is V1, V2, & V3 respectively. Let electric current I is passing through     the circuit.    Now

V = V1 + V2 + V3

According to Ohm’s law V = IR

thus,

IRe = IR1 + IR2 + IR3 

IRe = I(R1 + R2 + R3) 

IRe/I = R1 + R2 + R3 

Re = R1 + R2 + R3

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