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Solved exercise · level 3 of 5

Mixed circuit

Skills: Build, Analyse

Statement

Reproduce the circuit: R1 = 220 Ω in series with the group R2 = 470 Ω ∥ R3 = 470 Ω, at 9 V. Then compute the total current.

Parametric exercise: the values change with every draw; these are one example.

3 hints from Bastaya available in the lab
Solution

R2 ∥ R3 = 470 × 470 / (470 + 470); Req = 455 Ω; I = 9 / Req = 19.8 mA.

Course sheet of the chapter : Resistor networks

This chapter is covered by the paths: Discovery, 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
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R
rotate
C
chip brush
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