A circular loop with 50 coils is pulled (to the right) from an
external magnetic field of 0.8 T into the page. At t=0 the right
edge of the loop is at the right edge of the magnetic field. After
0.250 seconds the loop has moved completely out of the magnetic
field. Diameter of the coil is 10 cm
- Find the rate of change in flux through one loop as the loop if
the loop is pulled out of the magnetic field.
- If the loop contains 50 coils what is the induced emf in the
loop?
- What is the induced current in the coil if the total resistance
of the loop is 25 Ω ?
- What is the direction of the current induced in the loop?
(Hint: Use Lenz’s law to find the direction of the induced magnetic
field, then find the current direction needed to produce that
magnetic field.
- How much energy is dissipated in the loop?