The coulomb

Level 1 of 5 · Skills: Know

Statement

A 1 A current flowing for 1 s carries...

2 hints from Bastaya available in the lab

Solution

Q = I × t: 1 A × 1 s = 1 coulomb, i.e. 6.25 × 10¹⁸ electrons.

Course sheet of the chapter : Voltage & current

This chapter is covered by the paths: Discovery, General electricity

Other exercises of the chapter

Current direction level 1
Potential difference level 1
Domestic network level 1
Quantity of electricity level 2
Battery autonomy level 3
Current density level 3

Components

Drag an item onto the workbench (or click it).

Leads

Simulated time00:00:00

Q = I·t-

W = P·t-

Workbench

Chip brush · click or drag on the board · Shift + drag removes

Properties

Select a component on the board to edit its settings.

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.

Drag a component onto the board: it snaps onto the grid. R rotates it.
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.
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).
As soon as a loop is closed, the circuit is solved in real time (Ohm + Kirchhoff) and the diagram follows.
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