• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The aim of this experiment is to investigate the relationship between the current, voltage and resistance through the use of a fixed resistor and a filament lamp.

Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  • Essay length: 1994 words
  • Submitted: 19/06/2006
Share this essay:
University Degree Physics

The first 200 words of this essay...

Aim

The aim of this experiment is to investigate the relationship between the current, voltage and resistance through the use of a fixed resistor and a filament lamp.

Hypothesis

Based on knowledge of Ohm's law it can be hypothesised that when increasing voltage and current is passed through a filament lamp the resistance would increase in a non-linear fashion, such that a graph similar to the one given below would be obtained (figure 1). This non-linear graph would be expected due to temperature increases in the filament lamp.

It can also be hypothesised that when current is passed through a fixed resistor the relationship between V and I would be expected to be linear such that a straight line through the origin would be obtained (figure 2). In addition the readings on the ammeter and voltmeter would both change accordingly as expected.

The shape of a fixed resistor current-voltage graph (I-V graph) is explained in figure 3 since the three variables are related through Ohm's law.

Circuit Diagrams

Equipment

Fixed resistor &

Filament Lamp- to impede and obstruct current flowing through circuit

Ammeter- to measure current flowing through the

Read more
The above preview is unformatted text

Found what you're looking for?

  • Start learning 29% faster today
  • Over 150,000 essays available
  • Just £6.99 a month

  • "
    I am a person who learns better from observing first, markedbyteachers had aided my learning by providing pre-done essays, allowing me to expand my knowledge in a productive, logical and easily understandable way.
    "
    Joanne Barratt. Nursing. University Student.
  • "
    I have used the site to find relevant essay questions for my senior students in Modern History to complete. As well as provided some essay samples to demonstrate the stucture of an historical essay.
    "
    Yvette Agars. Senior History Teacher. Saint John's College. Whyalla S.A.

Marked by a teacher

This essay has been marked by one of our great teachers. You can read the full teachers notes when you download the essay.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review on the essay page.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review under the essay preview on this page.