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In a circuit ,60V battery, three resista...

In a circuit ,60V battery, three resistance `R_(1)=10OmegaR_(2)=20OmegaandR_(3)=xOmega` are connected in series. If 1 ampere current flows in the circuit, find the resistance in `R_(3)` by using Kirchhoffs loop law.

Text Solution

Verified by Experts

Given
1 = 1 amp
`R_(1)=10Omega`
`R_(2)=20Omega`
`R_(3)=xOmega`
V = 60V In ADCBA loop
`-IR_(3)-IR_(2)-IR_(1)+V=0`
`-1x-1xx20-1xx10+60=0`
`-x-30+60+0`
`-x+30=0`
`x=30Omega`
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