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DMRC JE EE 2018 Official Paper 2

Option 1 : equal to

CT 1: Basic Concepts

18461

10 Questions
10 Marks
6 Mins

**Maximum Power Transfer Theorem:**

Any linear circuit can be replaced by its Thevenin equivalent representation. This is explained with the help of the following circuits:

Vth = Open Circuit Voltage (Thevenin Voltage)

Rth = Thevenin Equivalent Resistance

According to the maximum power transfer theorem, **the load resistance is equal to source resistance** (or Thevenin’s resistance of network) for maximum power to be transferred to the load, i.e.

If RL = Rth, Maximum power is transferred.

**Important Points:**

According to maximum power transfer theorem, maximum power is transferred to the load when the load resistance:

ZL = ZS* (For AC circuits)

where ZS* is the complex conjugate of the source resistance or the Thevenin equivalent resistance.