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Simplify T = \(\frac{4R_2}{R_1^{-1} + R_2^{-1} + 4R_3^{-1}}\...

Simplify T = 4R2R11+R12+4R13

A.

4R1×R2R3R2R3+R1R3+4R1R2

B.

R1R2R3R2R3+R1R2+4R1R2

C.

16R1R2R3R2R3+R1R2+R1R2

D.

4R1R2R34R2R3+R1R2+4R1R2

Correct answer is A

T = 4R2R11+R12+4R13 = 4R21R1+1R2+4R3

= 4R2R2R3+R1R3+4R1R2R1R2R3

= 4R2×R1R2R3R2R3+R1R3+4R1R2

= 4R1×R2R3R2R3+R1R3+4R1R2

T = 4R1×R2R3R2R3+R1R3+4R1R2