Logged out
Access All our Essays in an Instant
Swap your work for FREE access, or pay £4.99 for instant access
Thermistors Investigation.
Member rating: No Rating | Words: | Submitted: Fri Nov 28 2003
Page Preview
On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:
Thermistors Investigation Aim To investigate the relationship between temperature and resistance in a thermistor. Introduction A current is the flow of charge round a circuit, this can be in the form of ions in a liquid or electrons in a metal. Resistance is anything that slows the flow of electrons round the circuit. Ohm's law states that the voltage is equal to the current multiplied by the resistance - V=IR This can be re-arranged to say R=V/I. Ohms law states that in a metal component the ratio of voltage to current remain constant, meaning that the resistance stays the same as long as the temperature remains the same. In this experiment I will be changing the temperature therefore this rule will not apply, however the equation R=V/I is always true as it is the way resistance is defined. In a wire when the temperature is increased the resistance increases. This is because at a higher temperature the...
Get instant access
- Instant, unlimited access to our documents in full
- Swap your work for free access, or pay £4.99
- To see the full version of this document and 147,038 others
Receive email updates for this category
- Simply tell us your email address and receive a weekly Study Help Email for FREE
- Receive 3 FREE essay views with each email
- Get all the latest essays from Coursework.Info & discussion from TheStudentRoom.co.uk
