Question

Find equivalent resistance between A & B.
(A) 5 2
(B) 102
(C) 15
(D) None of these​

Answer 1

$\huge{\mathfrak{HEYA\:MATE\:!!}}$

Answer...

The above resistors together form a

WHEATSTONE BRIDGE .

★Hence , the 6Ω will be neglected

→5Ω and 10Ω are in series so ,

R = 5 + 10 = 15Ω

→10Ω and 20Ω are in series so ,

R' = 10 + 20 = 30Ω

→30Ω and 15Ω are in parallel , so ,

$\frac{1}{R} = \frac{1}{15} + \frac{1}{30} \\ \\ \frac{1}{R} = \frac{2 + 1}{30} \\ \\ \frac{1}{R } = \frac{3}{30 } \\ \\ \frac{1}{R } = \frac{1}{10}$

$R_{AB}$ = 10 Ω

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$\mathscr{\large{Hope\:helps\:}}!! \\ \\ {GRACIAS!!}$

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