A 20 Ω resistance is connected in series with the load resistance across a 100 V supply. a. Determine the maximum power transfer. b. What is the efficiency if the circuit has maximum power transfer? c. What would be the load power if the efficiency of the circuit is 70% and the total power is 150 W? d. What would be the load resistance of the circuit in problem 2.c if the voltage drop across the load is 20 V?
KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
A 20 Ω resistance is connected in series with the load resistance across a 100 V supply.
a. Determine the maximum power transfer.
b. What is the efficiency if the circuit has maximum power transfer?
c. What would be the load power if the efficiency of the circuit is 70% and the total power is
150 W?
d. What would be the load resistance of the circuit in problem 2.c if the voltage drop across
the load is 20 V?
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