1.4 (h)

Demonstration 1

Charging a capacitor. In order to collect data to show the link between charge and current, it is possible to charge a capacitor up using a cell. The current is measured using a nanoammeter and is controlled using a resistor. The capacitor is a nanocoulombmeter and so both the current and charge can be measured; the charge should be measured every 5 seconds. Data should be measured for different currents

Analysis

Plot a graph of charge against time for the different currents.

Equipment

1x cell, 1x nanocoulombmeter, 1x nanoammeter, 1x s.p.d.t. switch, 1x variable resistor, 1x stopwatch

Syllabus

Motion, Energy & Charge