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Series-Parallel Circuits

Q1:

In the given circuit, the total resistance (RT) between points A and B equals _____.

A 10 omega.gif

B 100 omega.gif

C 900 omega.gif

D 1,010 omega.gif

ANS:B - 100 omega.gif

r2 and r3 are parallel. So r2*r3/r2+r3 = 90 ohm.

Then r1 and new resistance will be series. So 10 ohm + 90 ohm = 100 ohm.



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