NEET2011PhysicsCurrent ElectricityActual
Kirchhoff's law of junction, I=0 , is based on
Options
- Aconservation of energy
- Bconservation of charge
- Cconservation of energy as well as charge
- Dconservation of momentum
Correct answer
B. conservation of charge
Step-by-step solution
Kirchhoff's first law states that in an electric circuit, the algebraic sum of the currents meeting at any junction in the circuit is zero. i.e., i=0 Hence, according to Kirchhoff's law i₁+i₂=i₃+i₄+i₅ Thus, the sum of currents flowing towards the junction is equal to the sum of the currents flowing away from the junction. In other words, when a steady current flows in a circuit, then there is neither any accumulation of charge at any point in the circuit, nor any charge is removed from there. Thus, Kirchhoff's firs