Labo Élec

electrical lab simulator
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Exercise from the chapter "Ohm's law & resistance"

Misconnected instruments

Level 2 of 5 · Skills: Build

Statement

A1 reads 0 A although G supplies 12 V: voltmeter V1 is in series and blocks the current.

Reconnect V1 in parallel with R1 (and close the circuit again).

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

2 hints from Bastaya available in the lab
Solution

Voltmeter in parallel (huge resistance, does not disturb the circuit), ammeter in series (almost zero resistance). A1 then reads 255 mA and V1 12 V.

Course sheet of the chapter : Ohm's law & resistance

This chapter is covered by the paths: ISL-oriented exercises

Other exercises of the chapter

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

Workbench

Circuit diagram CEI 60617

How does it work?

The perfboard: each big hole is a circuit node. You push a single leg of a component (resistor, lamp...) into it. The 4 small holes around it are connected to it: that is where chips and leads plug in.

  1. Drag a component onto the board: it snaps onto the grid. R rotates it.
  2. To join neighbouring big holes, click Jumper chip in the palette (or C) then drag on the board: a line of chips is laid at once. Bridged holes become a single node.
  3. For long links and for the power supply (placed next to the board), drag a lead from one big hole to another (or to a terminal).
  4. As soon as a loop is closed, the circuit is solved in real time (Ohm + Kirchhoff) and the diagram follows.
  5. Zoom with the wheel (or + / −, two-finger pinch); drag the background to pan, 0 fits the board. The + buttons around the board add a row or a column.

Del delete · R rotate · C chip brush · Esc cancel · wheel zoom · drag the background to pan

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