two identical cell each of emf 5V is connected as shown in fig, then magnetic field at point P will be
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The magnetic field will be zero.
Option (2) is correct.
Explanation:
Given data:
EMF of battery = 5 V
To Find: Magnetic field at point P =?
The magnetic field at point P will be zero.
The reason is that as we can see in the figure that every battery is of 5 V and the bridge is a balanced bridge.
Means every battery's voltage gets canceled and the net current is zero.
So when the net current is zero the magnetic field will also be zero.
Balanced bridge ---> i (current) = 0 ----> Magnetic filed = 0
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