Characteristics of a filament lamp-year 9 physics required practical

Step 1

Set up your circuit

Step 2

Record the readings on the ammeter and voltmeter in a suitable table

Step 3

Adjust the variable resistor and record the new readings on the ammeter and voltmeter

Step 4

Repeat this to obtain several pairs of readings

Step 5

Swap the connections on the battery. The ammeter is now connected to the negative terminal and variable resistor to the positive terminal. The readings on the ammeter and voltmeter should now be negative

Step 6

Continue to record pairs of the readings of current and potential difference with the battery reversed

Step 7

Lot a graph of current against the potential difference. As the readings include negative values the origin of your graph will be in the middle of the graph paper.