KCET2016PhysicsCurrent Electricity
In the following network potential at 'O'
Options
- A( 4 ~V )
- B( 3 ~V )
- C( 6 ~V )
- D( 4.8 ~V )
Correct answer
D. ( 4.8 ~V )
Step-by-step solution
According to Kirchhoff's law, we have ( I₁+I₂+I₃=0 ) By Ohm's law, we have ( 8-V₀ 2 + 4-V₀ 4 + 2-V₀ 2 =0 ) ( 2 (8-V₀ )+ (4-V₀ )+2 (2-V₀ ) 4 =0 ) ( 16-2 V₀+4-V₀+4-2 V₀=0 ) ( 24-5 V₀=0 ) ( V₀= 24 5 =4.8 ~V ) Therefore, network potential at ' ( O ) ' is ( 4.8 ~V )