An MRI technician moves his hand from a region of very low (B=0) magnetic field strength into an MRI scanner’s 3.50 T field with his fingers pointing in the direction of the field. He is wearing a ring whose diameter is 2. 0 cm and its resistance is 0.1 Ω.. Assume that it takes 0.40 s to move it into the field. Calculate the change in the magnetic flux in the ring in the above scenario.

The change in the magnetic flux in the ring is 10.99 Wb.

Explanation:

Given that,

An MRI technician moves his hand from a region of very low (B=0) magnetic field strength into an MRI scanner’s 3.50 T field with his fingers pointing in the direction of the field.

Diameter of the ring, d = 2 cm

Radius, r = 1 cm

It takes 0.4 s to move it into the field. We need to find the change in magnetic flux in the ring. Magnetic flux is given by :

So, the change in the magnetic flux in the ring is 10.99 Wb. Hence, this is the required solution.

33: i think it’s b