Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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Each of the Batteries Shown in Figure Has an Emf Equal to 5 V. Show that the Magnetic Field B At the Point P is Zero for Any Set of Values of the Resistances. - Physics

Short Note

Each of the batteries shown in figure has an emf equal to 5 V. Show that the magnetic field B at the point P  is zero for any set of values of the resistances. 

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By appluing Kirchoff voltagee law,we can see that the current in the circuit is zero.
Net current in the circuit = 0
magnetic field is always proportional to the current flowing in the circuit hence,
Net magnetic field at point P = 0
Field at point P is independent of the values of the resistances in the circuit.

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HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 13 Magnetic Field due to a Current
Q 25 | Page 251
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