1) A solenoid with radius 0.05m carries a current of 10.0Amperes. There are 1000 coils in a length of 2.00m. What is the magnetic field in a similar solenoid with five times the radius?
Correct Answer: No answer given yet a b c d e
2) A circular loop of wire with area of 1.00m^2 is placed in a uniform magnetic field of 2.00T. The loop is oriented at an angle such that the magnetic flux is 1.00Weber. What is the angle between the normal to the loop and the magnetic field direction (in degrees)?
3) Look into the loop from problem 2 so that the field lines are pointing into your eye. The orientation of the loop has not changed. Now increase the magentic field from 2.0T to 3.0T in 0.01s. Give the magnitude of the induced emf and the direction of the induced current.
