practical investigating iv characteristics

Question 1

what unit is current measured in

Answer 1

amps

Question 2

what unit is potential difference measured in

Answer 2

volts

Question 3

what do you use to measure current when investigating iv characteristics of a diode

Answer 3

milliameter

Question 4

what should the pd of power supply be when investigating iv characteristics of a diode

Answer 4

5V or less

Question 5

how do you get negative current and voltage readings

Answer 5

swap the leads connecting to the power supplu

Question 6

why is a variable resistor used when investiagting IV characteristics

Answer 6

to change the resistance in the circuit so that more current and voltage pairs can be determined

Question 7

how many positive pair readings should you collect

Answer 7

5

Question 8

how many negative pair readings should you collect

Answer 8

5

Question 9

what do you do with your current and voltages that have been recorded

Answer 9

plot a graph of current against potential diffefence

Question 10

when plotting a graph of current against potetnial difference whoch goes on the the x axis

Answer 10

pd

Question 11

when plotting a graph of current against potential difference what goes on the y axis

Answer 11

current

Question 12

how can you tell if an ammeter or voltmeter have zero error

Answer 12

they will show a reading when not connected in a circuit

Question 13

when investigating iv characteristics what should be controlled

Answer 13

temp

Question 14

how could temp be controlled when investigating iv characteristic

Answer 14

turn the power supply off befween readings to prevent components warming up