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Two rods of thermal resistance R_1 and R_2 respectively are placed in parallel then their equivalent resistance R is given as

Option: 1

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


Option: 2

R = R_1 + R_2


Option: 3

\frac{1}{R} = \frac{R_1}{(R_1 + R_2)R_2}


Option: 4

\frac{1}{R} = \frac{R_1}{(R_1 + R_2)R_1}


Answers (1)

best_answer

As we have learnt,

 

Parallel Combination -

\frac{1}{R_{eq}}=\frac{1}{R_{1}}+\frac{1}{R_{2}}+............\frac{1}{R_{n}}

 

 

 

Posted by

Rakesh

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