Physics

24. Investigation of the energy stored in a capacitor

  • 00:34 The initial electrostatic energy stored in the capacitor was ½ CV = 0.5J This is less than the mechanical energy gained. Where else has the initial energy gone?

  • 22000µF capacitor

  • power pack

  • 2 lamp

  • switch

  • motor

  • voltmeter

  • leads

  • 5g mass

  • string

  • metre rule

Hazard Risk Control measure

Electrical

Electrical charge – the capacitor can explode if connected incorrectly.

Students should wear eye protection and should only connect the power when taking measurements.

Electrical

Electrical charge – the capacitor can explode if connected incorrectly.

Ensure that you connect the capacitor correctly. The positive end of the capacitor MUST be connected to the positive terminal on the battery