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The Wheatstone bridge shown in Fig. here...

The Wheatstone bridge shown in Fig. here, gets balanced when the carbon resistor used as `R_(1)` has the colour code (Orange, Red, Brown). The resistors `R_(2) and R_(4)` are `80 Omega` and `40 Omega`, respectively.
Assuming that the colour code for the carbon resistor, used as `R_(3)`, would be:

A

Red, Green, Brown

B

Grey, Black, Brown

C

Brown, Blue, Brown

D

Brown, Blue, Black

Text Solution

Verified by Experts

The correct Answer is:
C
`{:("Brown", "Blue", "Brown"),(3,2,10^(1)):}`
= 320
`=320/R_(3) = 80/40`
`R_(3) = 160`
`{:("Brown","Blue","Brown"),(1,6,10^(1)):}`
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