unit 3 experiment everything

Question 1

Hypothesis for LDR resistors

Answer 1

The resistance of the LDR decrease while light intensity of of light increase

Question 2

Variables for LDR resistors

Answer 2

Independent variables: Distance between the light source and LDR brightness
Dependent variables: Resistance of the LDR
Controlled variables: Type of LDR, type of light source, ambient light conditions

Question 3

Equipment List for the LDR

Answer 3

Light dependent resistor, Light source, multimeter, ruler and dark tube

Question 4

Method for the LDR

Answer 4

1.Set up the LDR and light source in dark tube lining
2.Position the light source at a know distance from the LDR
3. Use the Mulitmeter to measure and record the resistance of the LDR in a table
4. Do the experiment 3 times find the mean
5. plot a graph the relationship between resistance and distance

Question 5

health and safety

Answer 5

1. ensure the light source does not generate excessive heat
2. Handle the LDR and other electrical equipment carefully

Question 6

Data analysis for the LDR

Answer 6

Analyse the data by plotting the resistance of the LDR against the distance of the light source.