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Parallel Circuits

Q1:

Five 100  resistors are connected in parallel. If one resistor is removed, the total resistance is

A 25 

B 500 

C 100 

D 20 

ANS:A - 25  

1/R = 1/R1 + 1/R2 + 1/R3 + 1/R4

1/R = 1/100 + 1/100 + 100 + 1/100

1/R = 4/100

1/R = 1/25

Therefore R = 25 ohm.



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