IV characteristic practical

Question 1

What is the equipment list of this practical ?

Answer 1

ammeter, milliammeter, voltmeter, filament lamp, resistor, diode and protected resistor, variable resistor, variable power supply, connecting leads

Question 2

What is the first step to this practical ?

Answer 2

Construct the circuit shown in the diagram

Question 3

What is the second step for this practical ?

Answer 3

Set up variable power supply or variable resistor to the lowest potential difference

Question 4

What is the third step for this practical ?

Answer 4

Record current and voltage over the resistor

Question 5

What is the fourth step to this practical ?

Answer 5

Increase current from power supply to 2V and repeat your readings

Question 6

What is the 5th step for this practical ?

Answer 6

Change the resistor to a filament lamp and repeat this experiment

Question 7

What is the 6th step for this practical ?

Answer 7

Change the filament to a diode and a protective resistor (to restrict high currents flowing through the diode) ensuring the diode is the correct direction to allow the flow of current through. Change the ammeter to a milliammeter, since the current measured will be smaller than the other components

Question 8

Last step of the practical ?

Answer 8

Draw a graph of current against potential difference for each component

Question 9

What results will we expect to find from this practical ?

Answer 9

We find out that the resistor could be ohmic, filament lamp and the diode are non ohmic conductors