Physics Paper 2 WASSCE (PC), 2019

Question 2

 

The diagram above illustrates a diode tube. Identify each of the parts labelled P, Q and R.

Observation

This was not a popular question among candidates. Many candidates who attempted this questions scored poorly due to poor knowledge of diode tube. Performance was low.

The expected answer is

        P	-	(glass) Casing/tube  
	Q	-	anode                       
	R	-	cathode