(a)[1]
On Fig. 1.1, draw the symbol for a voltmeter so that it measures the potential difference (p.d.) across the diode.
(b)[2]
Enter the readings shown in Fig. 1.2 in the top row of Table 1.1.
(c)[2]
Calculate the resistance $R$ of the diode from the equation: $R = \frac{V}{I}$ Write your answer in the top row of Table 1.1 using an appropriate number of significant figures.
(d)[2]
Complete Table 1.1 by adding the missing values.
(e(i))[1]
Describe how a change in current affects the voltage across the diode.
(e(ii))[1]
Describe how a change in current affects the resistance of the diode.
(f)[1]
Suggest the mistake that the student has made when putting the circuit together.