Question

A prism is made of wire mesh with each side having equal resistance R . A battery of 6 volt and zero internal resistance is connected across E and F as shown in the figure the current in the branch AD if R is equal to 5 ohm is

Answer 1

Answer:

try to understand this concept its easy

Explanation:

The circuit can be redrawn as shown. There is a plane of symmetry passing through AB, cutting the prism shaped circuit in two halves.

This leads to conclude that there can be no current passing in arms FD and CE.

Thus the only arms to be considered are- AFEB, ADCB and AB.

Resistance of arm AFEB =3r

Resistance of arm ADCB =3r

Resistance of arm AB  =3Ω

These all are connected in parallel. Thus the equivalent resistance becomes  

5

3r

​  

.

Answer 2

Answer:

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tnx for free points.......