• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
6. 6
6

# What Factors Affect The Amount Of CurrentThat Can Flow Down A Wire

Extracts from this document...

Introduction

What Factors Affect The Amount Of Current That Can Flow Down A Wire

Aim:

I want to find out about factors and how they affect the amount of current that can flow down a wire.

Factors:

The factors that could affect my question are as follows and so is how they could do:

1/ no. Of volts: the volts we put into the wire the force there is that is pushing the current through so the higher the amount of current that does get through the wire. As shown in this formula: V=IR where V is voltage, I is current and R is resistance. So in the formula as voltage goes up so does current

2/ Resistance of the wire: The higher the resistance of the wire the less current that will flow through it Resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. The circuit itself can resist the flow of particles if the wires are either very thin or very long. E.g. the filament across an electric bulb is quite thin as needs to resist the flow of particles for the bulb to glow.

3/ Length of the wire: the longer the wire the more resistance that is present so less current flows through.

Middle

Temperature: All the readings will be taken within a short space of time and also I am only using 0.5 volts so the voltage should not cause the

Conclusion

The Wires Cross sectional area:

I think that if the wire width is increased the resistance will decrease. This is because of the increase in the space for the electrons to travel through. Due to this increased space between the atoms there should be less collisions.

Temperature:

I think that if the wire is heated up the atoms in the wire will start to vibrate because of their increase in energy. This causes more collisions between the electrons and the atoms as the atoms are moving into the path of the electrons. This increase in collisions means that there will be an increase in resistance.

Material:

I think that the type of material of the wire will affect the amount of free electrons, which are able to flow through that wire. This is because the number of electrons depends on the amount of electrons in the outer energy shell of the atoms, so if there are more or larger atoms then there must be more electrons available. If the material has a high number of atoms there will be high numbers of electrons causing a lower resistance because of the increase in the number of electrons. Also if the atoms in the material are closely packed then the electrons will have more frequent collisions and the resistance will increase.

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

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

# Related GCSE Electricity and Magnetism essays

1. ## Resistance Aim: my main aim is to investigate the factors that affect the resistance ...

3 star(s)

The current is the same through each resistor. The total resistance of the circuit is found by simply adding up the resistance value of the individual resistors: equivalent resistance of resistors in series is R = R1 + R2 * Resistance in parallel circuit: The results of this experiment proved

2. ## An experiment to find the resistivity of nichrome

one at a time as not to get the variable mixed up. For a suitable set of results I will investigate how the different materials affect the resistance, in this experiment I shall have wire of the same length, surface are but I will have 4 different materials.

1. ## Discover the factors affecting resistance in a conductor.

However, I do not feel that it is necessary to repeat the investigation, as I was able to obtain very reliable and accurate results that fully supported the prediction, and the evidence was sufficient enough to allow me to come to a firm conclusion.

2. ## What factors affect the flow of current through a wire?

Out of the many factors, which affect the flow of current through a wire, the one that I am investigating is the effect of length of wire. The reason I have chosen to do this is that it is by far the easiest and probably the most convenient.

1. ## Investigation of the factors that affect the resistance of a wire.

R AVERAGE RESISTANCES FOUND FROM OTHER RESISTANCES 0.08 2.06 0.15 13.73 2.38 0.18 13.22 3.04 022 13.82 3.53 0.25 14.12 4.04 0.29 13.93 4.52 0.32 14.13 13.83 0.11 1.46 0.14 10.43 1.77 0.17 10.41 2.11 0.2 10.55 2.46 0.23 10.70 2.89 0.27 10.70 3.04 0.29 10.48 10.55 0.13 1.46 0.15

2. ## Investigating Factors That Affect The Current In A Wire.

This is because it will still show many readings, but will not overheat the wire. Investigation 2 Aim To choose a suitable wire for the investigation. The wire must have a large range of results and must not overheat at short or long lengths.

1. ## How does the length affect the amount of current flowing through a piece of ...

Switch off the power and let it cool down. (Change the length of the resistance wire to 80cm, reset the voltage to 2 volts and record results. Switch off the power and let it cool down. (Change the length of the resistance wire to 70cm, reset the voltage to 2 volts and record the results.

2. ## Investigate how resistance can affect the amount of current flow.

Resistance in wires. Physicists sometimes explain the flow of current through a material, such as a resistor, by comparing it to water flowing through a pipe. A pressure difference maintained across two ends of the pipe by a pump is like the potential difference, or voltage, across a wire maintained by a battery.

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