The earth's magnetic field at a certain point is 7.0 × 10^ -5 ~T ....

The earth's magnetic field at a certain point is $7.0 \times 10^{-5} \mathrm{~T}$. This field is to be balanced by a magnetic field at the centre of a circular current carrying coil of radius 5.0 cm by suitably orienting it. If the coil has 100 turns then the required current is about