The objectives of this experiment are to Verify Kirchhoffs laws Determine the equivalent resistance of a network & Study the maximum power transfer theorem.

Authors Avatar by allenchan (student)

                   EE2721 Electric Circuit Analysis

Group 5

Introduction:

The objectives of this experiment are to

Verify Kirchhoff’s laws

Determine the equivalent resistance of a network

Study the maximum power transfer theorem

Apparatus:

DC power supply

Multi-meter (DMM)

Experimental board

Experiment 1:(Kirchhoff’s laws)

Theory:

According to the Principle of conservation of Charges, since charges do not accumulate at any point in a network, the charges cannot be created or destroyed.

This bring the Kirchhoff’s First Law, the algebraic sum of the current at a junction of a circuit is zero. Therefore, the current arriving a junction equals the current leaving the junction.

This law also assumed to be positive if it flows into a point and negative if it flows out from the point.

There is also a Kirchhoff’s second law relates the total e.m.f in a closed loop.

Round a closed loop, the algebraic sum of the e.m.f is equal to the algebraic sum of the products of the current and resistance.

Procedure:

The experimental board was connected to the DC power supply as follow

Join now!

 2. The DC supply was adjusted to keep the voltage across Nodes A and C to 5V

3. The voltage across the branched that connect to Node B were measured, the data

  we took

+

+

=0.1330+(-0.0398)+(-0.0936)=-4x

A

4. Step 3 was repeated for Node M, the data we took

+

+

=0.06643+(-0.1078)=0.03995=-1.42x

A

The results we took both are very close to zero. The above result show that it obey the Kirchhoff’s first law(current law).

5. The voltage across AC was adjusted to 5V, then the voltage ...

This is a preview of the whole essay