Question

I will mark you brainliest

in the figure what is the value of x
if net resistance b/w A and B is 50(ohm)

Answer 1

Heya!!

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Effective resistance btw A and B = R1 + R2

Since R1 is an equivalent resistance of 30 & 60 ohms in parallel.

=) 1/R1 = 1/30 + 1/60

=) 1/R1 = 1/20

=) R1 = 20 ohms

Similarly R2 is an equivalent resistance of X and 40 ohms in parallel.

=) 1/R2 = 1/X + 1/40

=) 1/R2 = 40+X / 40X

=) R2 = 40X / 40+X

=) 50 = 20 + 40X/40+X

=) 50-20 = 40X/40+X

=) 30 = 40X/ 40+X

=) 30(40+X) = 40X

=) 1200 + 30X = 40X

=) 1200 = 40X-30X

=) 1200 = 10X

=) 120 ohms.

Hope it helps uh :)