Question

please tell equivalent resistance betweenA&B​

Answer 1

Answer:

30 Ω

Explanation:

As shown in the figure, 3 resistances each of resistance 10 Ω are connected in series across A and B.

This is a special case of resistors in series,

where there are 'n' equal resistors and their equivalent resistance is given by, Req = n R (here n = 3, R = resistance of individual resistance)

Thus, Req = Rs = 3 (10Ω ) = 30Ω

THANKS!

Answer 2

Answer:

30 Ω

Explanation:

Solving parallel combination b/w AB and CD we get,

Rp = 100 / 20 = 5 Ω

Now, this is a special case in which we can find symmetry if we draw a line in the middle horizontally, called the Line of symmetry so we can ignore the middle parallel combination 5Ω which is now of no use.

Solving AB circuit, since the three resistors are in series, we get

Rs = 10 +10 +10 = 30Ω

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