A magnetic field of 37.2 T has been achieved at the MIT Francis Bitter National Magnetic Laboratory. Find the current needed to achieve such a fielda) 2.00 cm from a long straight wireb) At the centre of a circular coil of radius 42.0 cm that has 100 turnsc) Near the center of a solenoid with radius 2.40 cm, length 32.0 cm and 40000 turns
