CAPACITY AND INDUCTIVE CIRCUITS, RESONANCE 69 



27. Given a circuit of 6.52 ohms resistance and 80 microfarads 

 capacity, to which an e.m.f. of 130 periods and 400 volts is applied. 

 Find the value of L which makes the current a maximum, and tln-n 

 the values of the current and lag or lead for the following values 

 of L: 0, 0.01, 0.03, 0.04. Plot these in terms of L. (SO min.) 



