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

Investigation of the Current & Voltage characteristics of a Meyer Lamp

Extracts from this document...

Introduction

Investigation of the Current & Voltage characteristics of a Meyer Lamp

In this experiment I will be testing to see if the conductor (i.e. the Meyer Lamp) obeys Ohms Law.

Plan

In this experiment I will be observing the current-voltage relationship of a Meyer Lamp.

The apparatus that I will need are:

  • Ammeter (multi-meter)
  • Voltmeter (multi-meter)
  • Variable Resistor
  • Power Supply
  • Wires to connect the circuit
  • Meyer Lamp

In this experiment I have decided to increase the voltage of the Meyer Lamp at constant intervals of 1V. This will be done by using the variable resistor. Then I will measure the voltage across the circuit when there is a certain voltage flowing through the lamp. The observations will be recorded in a table and I will then plot a graph of current against voltage. According to Ohm’s Law, current and voltage

...read more.

Middle

image03.png

Observationsimage02.pngimage01.pngimage00.png

I recorded my results in the table below.

Voltage (V) Across Meyer Lamp

Current (A)

...read more.

Conclusion

According to the graph I can say that my experiment went reasonably well. However, not all the points lie in a perfect straight line. This may be because temperature was a factor that was hard to control in this experiment. The best we could do was to work at room temperature. The variable temperature did not produce any major anomalous results and so the error can be said to be very small.

The graph shows that as you increase the voltage the current also increases. I increased the voltage in the experiment by decreasing the resistance, therefore more current was allowed to flow through the circuit and so there was a greater potential difference between the Meyer Lamp.

As the experiment shows that there was a current-voltage relationship of the lamp, we can call the lamp an “Ohmic” material as V=IR.

Gurnam Singh Virdi

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics section.

Found what you're looking for?

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

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Electrical & Thermal Physics essays

  1. Investigation into the resistance of a filament lamp.

    would be around 12 Volts so therefore I decided to set the power supply to 12V. After choosing the DC voltage power supply, I had to choose different ranges of voltage each time, I concluded that it would be best to start from 0.5 volts and to finish at 12 volts, increasing in steps of 0.5 volts each time.

  2. Relationship between the current and voltage.

    The potential difference is measured in volts, (V), using a voltmeter. The voltmeter is connected in parallel, to the component desired to measure the voltage going through it. A battery with a voltage of 1 volt gives 1 joule of energy, to each coulomb of charge that passes round the circuit.

  1. Characteristics of Ohmic and non-Ohmic Conductors.

    From the results, I can see that Current increases with Voltage for all the graphs. But the way in which it increases is different. Any difference in reading may be due to some error, which I will account for in evaluation.

  2. Investigate the current - voltage relationship for a resistor and filament lamp. To determine ...

    -0/01 0.14 0.09 -0.012 -0.3 0.54 0.13 -0.014 -0.7 1 0.16 -0.016 -1 1.5 0.20 -0.019 -1.5 2 0.23 -0.023 -2 2.5 0.24 -0.023 -2.5 3.1 0.27 -0.027 -3 3.5 0.29 -0.031 -4 4.3 0.32 Resistor Positive Negative Pd./V I/A Pd./V I/A 0.05 0.003 -0.0025 -0.02 0.5 0.03 -0.04 -0.5

  1. Characteristics of Ohmic and Non Ohmic Conductors.

    If the object is an insulator then the bulb will not light up and the ammeter will not show any reading. This is a conductor when no potential difference is applied. When a potential difference is applied between the ends of the conductor, as shown in the previous circuit, they all line up to move to one side.

  2. A2 Viscosity investigation

    Afore mentioned is all the limitations from the measuring devices used and a brief guide how to obtain maximum accuracy from this equipment. But there is still much to take into consideration such as the fact that air bubbles will affect the viscosity or rather what the viscosity will appear to be.

  1. Is a filament lamp an ohmic resistor?

    Piece of metal made up of Atoms Each atom is made up of a nucleus that has a certain number of protons and neutrons with an equal numbers of electrons in orbit. The copper atom has 29 protons in its nucleus with 29 electrons orbiting the nucleus.

  2. Practical Project (2863/02): The Characteristics of a Shunt Wound Motor

    It would also be extremely difficult to judge at what time the weight had reached a steady speed. Preliminary Experiment For my preliminary experiment, I had to test how much strain the leather straps could cope with. I tested the apparatus at increasing tensions, and discovered that over 11N the straps became very hot and began to smoke.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work