Kirchhoff's laws

Need to know

What you need to know

• Based on the principle of conservation of charge.
• A 'junction' is any point where three or more conductors meet.
• An alternative form is ΣI = 0, where currents entering are positive and currents leaving are negative.
• Always label your assumed current directions on a diagram before starting your calculation.

Explanation

Kirchhoff's laws

1. Based on the principle of conservation of charge.
2. A 'junction' is any point where three or more conductors meet.
3. An alternative form is ΣI = 0, where currents entering are positive and currents leaving are negative.
4. Always label your assumed current directions on a diagram before starting your calculation.