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Solved exercise · level 1 of 5

Lenz's law

Skills: Know

Statement

According to Lenz's law, the induced current flows so that it...

  1. Opposes the cause that produced it
  2. Reinforces the flux change
  3. Is always clockwise
  4. Depends on the circuit resistance
2 hints from Bastaya available in the lab
Solution

The minus sign in Faraday's law expresses this opposition: energy conservation.

Course sheet of the chapter : Induction & self-induction

This chapter is covered by the paths: General electricity

Other exercises of the chapter

Simulated time00:00:00
Q = I·t-
W = P·t-

Circuit diagram CEI 60617

How does it work?

Each big hole is a circuit node: you push one leg of a component into it. The 4 small holes around it are connected to it: chips and leads plug in there.

  1. Place a component Drag it from the palette: it snaps onto the grid. R rotates it.
  2. Bridge neighbouring holes Pick the jumper chip (or C) and drag on the board: bridged holes become a single node.
  3. Draw a lead For long links and the power supply: from one big hole to another, or to a terminal.
  4. Close the loop The circuit is solved live (Ohm, Kirchhoff) and the diagram follows.

Shortcuts

Del
delete
R
rotate
C
chip brush
Esc
cancel
wheel
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fit the board
drag background
pan

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