Science, asked by naweedrahman, 10 months ago

29. (a)
For the combination of resistors shown in the following figure, find
the equivalent resistance between M & N.
-M
1
R3​

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Answers

Answered by thomas36
19

Answer:

resistance between=(R3R4/R3+R4)+R1+R2

Answered by muscardinus
25

The equivalent resistance between M and N is R_1+R_2+\dfrac{R_3R_4}{R_3+R_4}

Explanation:

In the attached figure, it shows the combination of resistors R_1,R_2,R_3\ and\ R_4. Here, R_3\ and\ R_4 are in parallel. Let their equivalent is given by the formula as :

\dfrac{1}{R}=\dfrac{1}{R_3}+\dfrac{1}{R_4}\\\\R=\dfrac{R_3R_4}{R_3+R_4}............(1)

Now, resistors R_1,R_2\ and\ R are in series. Their equivalent resistance is given by the formula :

R_{eq}=R_1+R_2+\dfrac{R_3R_4}{R_3+R_4}

So, the equivalent resistance between M and N is R_1+R_2+\dfrac{R_3R_4}{R_3+R_4}. Hence, this is the required solution.

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