Resistance- year 9 required practical

Step 1

Use a circuit diagram to set up and connect the circuit

Step 2

Next, connect a lead from the negative side of the ammeter to the crocodile clip at the 0 end of the ruler

Step 3

After, connect another crocodile clip to the negative side of the battery an use the lead as a switch to disconnect the battttery between readings

Step 4

Decide the interval distance you are going to investigate and put the lead at points A and B

Step 5

Measure the readings on the ammeter and voltmeter and use the equation V=IR to get the resistance.

Step 6

Continue moving B to your chosen interval distance to get differentt measurements and then record the readings

Step 7

Disconcert the battery between readings so the wire doesn’t get hot. After recording the readings transfer them onto a graph against resistance and the length of the wire