Home » Network Theory » Network Elements and the Concept of Circuit » Question

Network Elements and the Concept of Circuit

Easy Questions

Network Theory

Network Elements and the Concept of Circuit
Network theory miscellaneous
  1. Calculate the value of R in ohms under maximum power transfer condition for the circuit shown below—


    1. 80Ω
    2. 0Ω
    3. 40Ω
    4. 10Ω
Correct Option: B


From above figure, if we apply maximum power transfer theorem, then
RL = Rth = 20|| R

or RL =
20R
20 + R

or 16 =
20R
20 + R

or R = 80Ω
However, the maximum power will transfer if and only if R = 0, so that there is no voltage drop in internal resistances. Therefore alternative (B) is the correct choice.


Your comments will be displayed only after manual approval.