Learning objective
Master the concepts of node, branch and loop in a branched circuit.
Learn to write and apply Kirchhoff's first and second rules with the sign convention.
Explain the work and power of current and the Joule–Lenz law in integral and differential form.
Analyse the useful power of a source, its efficiency and the condition for maximum power.
Expected outcomes
Can find all currents in a branched circuit with several sources using Kirchhoff's rules.
Can calculate an unknown resistance from the balance condition of a Wheatstone bridge.
Can calculate the power of a load, the energy consumed and the heat released.
Can determine the efficiency of a source and the condition for maximum power transfer to the load.
Activities
Lecture
Lecture · 1 h 20 min ·
required
Solving problems on Kirchhoff's rules
Practice · 1 h 20 min ·
required
Determination of the resistance of conductors with a Wheatstone bridge
Laboratory · 1 h 20 min ·
optional
Determination of the electric power of a load (light bulb)
Laboratory · 1 h 20 min ·
optional
Study of the Joule–Lenz law
Laboratory · 1 h 20 min ·
optional
Analysis of branched electric circuits
Self-study · 6 h ·
optional
Final test
Test · 20 min ·
required
· pass ≥ 70%
Completion conditions
- Lecture
- Solving problems on Kirchhoff's rules
- Final test — at least 70%