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

An investigation into the efficiency of an immersion heater 2

Extracts from this document...

Introduction

Page:

Mohamed Hassan                student no: 20042512

An investigation into the efficiency of an immersion heater

Introduction:

        An emersion heater is primarily used to heat water. It does this by using electrical power and converting it into heat energy.

The amount of energy supplied to the emersion heater will be worked out using the formula: Voltage image05.png Current image05.pngTime.

The heat gained by the water was calculated by using the formula: Mass of water image05.png Specific heat  image05.png Temperature change.

This will then be used to calculate the efficiency of the heater. Efficiency is how good the item being tested is

...read more.

Middle

temperature of water after 2 minutes

To get a fair and average result I will change the type of wire I am using as well as the S.W.G of the wires but not the length of the wire so as to get a variety of results ands therefore see what wire is more efficient to use in the immersion heater.

Results:

Below are the tables of the results I got once I had carried out the experiment.

Constantan 28 S.W.G

Length

Voltage

(v)

Amps (c)

Time in water

Electrical energy

Initial temp (oC)

Final temp (oC)

Temp change (oC)

40cm

9.30

4.30

2 minutes

4798.8  

23

35

12

Nickel chrome 28 S.W.G

Length

Voltage

(v)

Amps (c)

Time in water

Electrical energy

Initial temp (oC)

Final temp (oC)

Temp change (oC)

40cm

10.27

2.05

2 minutes

2525.42

23

30

7

...read more.

Conclusion

 Things that I would change about this experiment if I  was to do it again would be that I would try more types of wires and a different variety of S.W.G s as there weren’t many different types of S.W.G s available at the science lab.

...read more.

This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Found what you're looking for?

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

Here's what a teacher thought of this essay

3 star(s)

This report has an appropriate structure and the language used is good.
1. The plan is missing several sections including a variables and safety section.
2. The conclusion is very brief and does not use the data to back up the claim.
3. The report is missing an evaluation section.
***

Marked by teacher Luke Smithen 05/09/2013

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 GCSE Electricity and Magnetism essays

  1. Peer reviewed

    Investigation in resistance in wires

    5 star(s)

    * The Voltmeter and Ammeter were also added. * The three lengths of wire were tested with 8 different voltages. Preliminary Results These are the results I collected in the preliminary test. Length of wire (Cm) Volts (V) Current (A)

  2. Free essay

    Resistance of a Wire

    4 star(s)

    The dial volt will be 4 and I will not have the length of wire shorter than 10 cm so the wire will not heat up. Apparatus My Circuit Diagram -Power supply (1) -Digital voltmeter (1) -Digital ammeter (1) -Crocodile clips (2)

  1. To investigate which fuel gives out the most energy when burnt. We are burning ...

    1 � 32 = 0.03125 = 4620 Energy/mole = energy/moles = 4620�0.03125 = 147.8KJ/MOL 2. Methanol (repeat) -weight Temperature Start- 164.77 Start- 39�C End- 163.61 End- 50�C Burnt- 1.16 Rise- 11�C Methanol (RMM) = CH3OH= 32 Energy released= 11 x 100 x 4.2 Moles = 1.16 � 32 = 0.03625

  2. Physics GCSE Coursework:Factors affecting the resistance of a wire

    Variables: Independent - Cross-sectional area of the wire Dependant - Resistance Control - Voltage/Current (Via powerpack) - Length of wire - Temperature - Wire Material Apparatus: Power Pack (D.C) Voltmeter Ammeter 5 x Crocodile Clip Wires Constantan wires with various cross sectional areas (SWGs)

  1. Free essay

    Resistance in a wire

    The power pack will have a cable connected to the set of wires. (Connected to the wire that is being tested at that present time). Then a cable connected to the ammeter, another cable will exit the opposing side of the ammeter, completing the circuit.

  2. An in Investigation into the Resistance of a Wire.

    Silicon diodes also use resistance as a means of controlling current flow in a circuit. In one direction the resistance is very high, effectively preventing current flow, in the other direction the resistance is relatively low and the current can flow.

  1. Resistance of a Wire Investigation

    and I shall keep the length of the wire at 50 Cm. Preliminary Results Below is a table of results which I have collected from my preliminary experiment. From these results I have chosen to use thin Constantine for the wire I am going to use in my main Experiment.

  2. The resistance of wire.

    Resistance is measured in ohms. A resistor has the resistance of one ohm if a voltage of one volt is requires to push the current of one amp through it. Resistance occurs when the electrons travelling along the wire collide with the atoms of the wire.

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