Elec Class

learn electricity hands-on
0 1 / 20

Solved exercise · level 2 of 5

Rank the oven settings

Skills: Know

Statement

An oven has two identical resistors. Rank its three settings from strongest to weakest.

  1. Parallel > single > series
  2. Series > single > parallel
  3. Single > parallel > series
  4. All equal
2 hints from Bastaya available in the lab
Solution

At constant U, P = U²/R: the smallest Req (parallel, r/2) gives the highest power (2P), series (2r) the lowest (P/2).

Course sheet of the chapter : Resistor networks

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-

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
zoom
0
fit the board
drag background
pan

Confirmer

Renommer

Importer un montage

Export