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# How to produce an electric current?

Extracts from this document...

Introduction

## Introduction

How to produce an electric current?

I f you take a magnet and move it in to a coil of wire the voltage has been induced to a smaller voltage to induce it to a bigger voltage you move the magnet out of the coil in the opposite direction. In a generator, a magnet rotates inside a coil of wire. This includes a current if the coil is connected to a complete circuit. Otherwise it will induce the voltage and not the current. Things you can use to create a greater current is to use

• A stronger magnet.
• Create more turns on the coil of wire.
• Increase the area of the coil.

## How to make a current flow?

...read more.

Middle

2 Constantan wires 1m length

Method:

1.      Arrange apparatus as shown in the Diagram:

2.      Organize wires to the following lengths:

10cm

20cm

30cm

40cm

50cm

60cm

70cm

80cm

90cm

100cm

3.      Attach the wire to the crocodile-clip leads and set voltage to 5 volts or 1.5 Volts

4.      Take the reading from the ammeter and record in results table.

5.      Repeat 3 times for each length of wire and find the average.

6.      Then work out the resistance using the formula V÷I=R

(Voltage ÷ Current = Resistance)

Preliminary

We carried out a preliminary experiment to see the other factors that could affect the experiment and also to see if we could improve any of the steps in the method. This showed that the wire was

...read more.

Conclusion

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...read more.

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