Description

Principle

A capacitor is charged by way of a resistor. The current is measured as a function of time and the effects of capacitance, resistance and the voltage applied are determined.

Benefits

• Simple and very clear set-up: only few components required
• Further experiments in electricity and electronics can be performed with the equipment

Tasks

• To measure the charging current over time:

1. using different capacitance values C, with constant voltage U and constant resistance R
2. using different resistance values (C and U constant)
3. using different voltages (R and C constant).

• To determine the equation representing the current when a capacitor is being charged, from the values measured.

Learning objectives

• Charging
• Discharging
• Time constant
• Exponential function
• Half life

Even more accurate readings are possible when using the multimeter 07124-12.

Scope of Delivery