Kirchhoff's first law i.e. at a junction is based on the law of conservation of :
(1) Charge
(2) Energy
(3) Momentum
(4) Angular momentum
The figure below shows currents in a part of electric circuit. The current i is
(1) 1.7 amp
(2) 3.7 amp
(3) 1.3 amp
(4) 1 amp
The figure shows a network of currents. The magnitude of currents is shown here. The current i will be
(1) 3 A
(2) 13 A
(3) 23 A
(4) – 3 A
Kirchhoff’s first and second laws for electrical circuits are consequences of:
1. | conservation of energy. |
2. | conservation of electric charge and energy respectively. |
3. | conservation of electric charge. |
4. | conservation of energy and electric charge respectively. |