A helium nucleus makes a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the

A helium nucleus makes a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the centre of the circle will be
A. `(10^(-19))/(mu_(0))`
B. `10^(-19)mu_(0)`
C. `2xx10^(-10)mu_(0)`
D. `(2xx10^(-10))/(mu_(0))`

A helium nucleus makes a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the centre of the circle w

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