# Physics Class 12 NCERT Solutions: Chapter 3 Current Electricity Part 4

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Q: 9. Determine the current in each branch of the network shown in figure:

Answer:

Current flowing through various branches of the circuit is represented in the given figure.

Current flowing through the outer circuit

Current flowing through branch AB

Current flowing through branch AD

Current flowing through branch BC

Current flowing through branch CD

Current flowing through branch BD

For the closed circuit ABDA, potential is zero i.e.

For the closed circuit BCDB, Potential is zero

For the closed circuit ABCFEA, potential is zero i.e.,

From equations (1) and (2), we obtain

Putting equation (4) in equation (1), we obtain

It is evident from the given figure that,

Putting equation (6) in equation (1), we obtain

Putting equation (4) and (5) in equation (7), we obtain

Equation (4) reduces to

Therefore, current in branch

In branch

In branch

In branch

In branch

Total current