Question

Find the equivalent resistance between a and b.
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Answer 1

Answer:

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Answer 2

Explanation:

v) 3 R are in || with one R

Req (in ||)= R+R+R = 3R

Req of circuit = 3R*R/3R+R = 3R/4

vi)1/ Req b/w a and b = 1/2R+1/R+1/2R

= 1+2+1/2R = 2/R

Req = R/2

vii) 2R and R is in ||

so, it Req = 2R*R/2R+R = 2R/3

it is in || with one R

Req. = 2R/3 + R = 5R/3

Now,, this is || with another R

Req = 5R/3 *R / 5R/3 + R = 5R²/3 * 3/8R = 5R/8

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Amrit