Electrical Circuits RQP- investigating I/V characteristics of different circuit elements

Question 1

draw the circuit for this practical

Answer 1

• battery, ammeter and variable resistor in series
• box in series to represent component being tested- mention to add a resistor in series for testing diodes
• voltmeter in parallel around component

Question 2

step 1

Answer 2

set up circuit in diagram

Question 3

step 2

Answer 3

set power supply to zero at the start

Question 4

step 3

Answer 4

record the reading on the voltmeter and ammeter

Question 5

step 4

Answer 5

use the variable resistor to alter the potential difference

Question 6

step 5

Answer 6

record the new readings on the voltmeter and ammeter

Question 7

step 6

Answer 7

repeat steps 3-4, each time increasing the potential difference slightly

Question 8

step 7

Answer 8

reverse the power supply connections and repeat steps 2-6

Question 9

step 8

Answer 9

repeat the experiment but replace the component with another