Basic Electronics Paper 2, WASSCE (PC 2ND), 2020

Question 3

       

  1.    Define the following terms with respect to resistor:
  2. (i) tolerance;
    (ii) power rating.

  3.    Complete Table 1.
  4.  

     
 

 

The expected responses were:

(a) Tolerance: quantifies the extent to which the resistor’s resistance may vary from its rated (nominal) or specified value.                                                          

 

(b)  Power Rating: the amount of heat (in Watts) that the resistor can continuously dissipate without affecting its resistance rating or degrading its performance.