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A coil carrying a current 10mA is placed...

A coil carrying a current `10mA` is placed in a uniform magnetic field so that its axis coincides with the field direction. The single layer winding of the coil is made of copper wire with diameter `0*1mm`, radius of turns is equal to `30mm`. At what value of the induction of the external magnetic field can the coil winding be ruptured? Breaking stress is `3*1xx10^8Nm^-2`.

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