To investigate the relationship between current and potential difference (ohm’s law).

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Ohm' Law

Aim: To investigate the relationship between current and potential difference (ohm's law).

Prediction: I predict that as the current increase or decrease the voltage will increase or decrease in the same proportion.

Safety: This is not a very dangerous experiment, never the less, we should take care when handling electricity and make sure that our hands are dry.

Apparatus:

- Power supple.

- Variable resistor

- Resistor

- Volt meter
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- Ammeter

- Wires

Procedure:

As written in experimental handout attached.

Results:

Current (A)

Voltage (V)

Resistance (?)

0.29

5.52

9.03

0.26

4.91

8.88

0.24

4.48

8.66

0.21

3.91

8.61

0.19

3.78

9.89

0.18

3.45

9.16

Discussion:

As you can see from my table of results, the current decreases along with the voltage. When the current was 0.29 amps, the voltage was 5.52 V. When the current ...

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