The diagram shows a circuit consisting of a diode and a bulb. When the switch is on, the bulb does not light up.
Gambar rajah menunjukkan litar yang mengandungi diod dan mentol. Apabila suis dihidupkan, mentol tidak menyala.
What needs to be done to light up the bulb?
Apakah yang perlu dilakukan untuk menyalakan mentol itu?
A Replace with a new bulb
B Increase the number of dry cells
C Reverse the diode connection
D Connect a resistor parallel to the bulb