I-V Practical

Question 1

Set up circuit

Answer 1

. battery
.component
-an ammeter in series with it
-a voltmeter parallel to it
. a variable resistor

Question 2

Step 1

Answer 2

Measure the current in the component using the ammeter

Question 3

Step 2

Answer 3

measure pd across component using voltmeter

Question 4

Step 3

Answer 4

Vary the resistance of the variable resistor

Question 5

Step 4

Answer 5

record a range of values of current and pd

Question 6

Step 5

Answer 6

ensure current is low to avoid a temp increase

Question 7

Step 6

Answer 7

Switch current off between readings

Question 8

Step 7

Answer 8

Reverse connection of component to power supply so the direction of current is reversed.

Question 9

Step 8

Answer 9

Plot a graph of current (y) against pd (x)