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Total resistance in circuit

0 votes

asked Jul 28, 2015 in ELECTRICAL ENGINEERING by anonymous

1 Answer

0 votes

Step 1:

Observe the circuit.

The resistors image, image and image form a network.

Convert the network into a Pi network.

Formula for the resistors when the network is changed into network.

Here image, image and image.

From the above formula :

image

image.

image

image.

image

image.

Step 2:

Redraw the circuit replacing network by a network.

image

The resistance image and image are in parallel.

The resultant parallel resistance is image.

image

The resultant parallel resistance is image.

answered Jul 28, 2015 by Lucy Mentor

Contd...

The resistance image and image are in parallel.

The resultant parallel resistance is image.

image

The resultant parallel resistance is image.

The resistance image and image are in series.

image

image.

The resultant series resistance is image.

Step 3:

Redraw the circuit replacing the resistors image, image, image and image by image.

image

The resistance image and image are in parallel.

The resultant parallel resistance is image.

image

The resultant parallel resistance is image.

The Resistance image and image are in parallel.

The resultant parallel resistance is image.

image

The resultant parallel resistance is image.

The resistance image and image are in series.

image

image.

The Resistance image and image are in parallel.

The resultant parallel resistance is image.

image

image.

Solution :

The total resistance between terminals A and B is image.

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