investigating current/pd components characteristics

Question 1

what can use this practical for

Answer 1

resistor
diode
filament bulb

Question 2

draw the circuit diagram for this practical

Answer 2

….

Question 3

what is the first step

Answer 3

read the voltage from the voltmeter across the component and the current from the ammeter and record these into a table and take a mean.

Question 4

what is the second step

Answer 4

adjust the variable resistor to vary the current and voltage and record the new readings on the ammeter and voltmeter

Question 5

what is the third step

Answer 5

repeat second step several times to get a range of readings

Question 6

what is the fourth step

Answer 6

switch the direction of the battery to get negative values from the ammeter and voltmeter.

Question 7

what is the last step

Answer 7

plot a graph using the mean

Question 8

what are some extra information

Answer 8

don’t leave circuit connected for a long time so resistance doesn’t increase
when using a diode, add extra resistor as diodes can be damaged from large currents