2.1 Use the Biot-Savart law to obtain an expression for the magnetic field at a point B(r) in terms of the integral of the local current density j(r'). Hence show that the divergence of B is zero.

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2.1 Use the Biot-Savart law to obtain an expression for the magnetic field at a point
B(r) in terms of the integral of the local current density j(r'). Hence show that
the divergence of B is zero.
Transcribed Image Text:2.1 Use the Biot-Savart law to obtain an expression for the magnetic field at a point B(r) in terms of the integral of the local current density j(r'). Hence show that the divergence of B is zero.
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