solenoid of 0.5 m length with 100 turns carries a current of 5 A. A coil of 20 turns and of radius 0.02m carries a current of 0.6 A. What is the torque required to hold the coil with its axis at right angle to that of solenoid in the middle point of it? a) 1.60 N m b) 15.89 × 10-5 N m c) 1.893 × 10-5 N m d) 1.893 × 10-8 N m

1. A student uses a coil of radius 14 cm with 90 windings.a) Calculate the expected slope for a plot of magnetic field vs current in this coil.b) She performs the lab and measures a slope of 4.2 x 10^-4 T/A. Based on this slope, what valuedoes she calculate for μo ?c) Calculate the percent error between her measured value of μo and the theoretical value.2. She then uses a permanent magnet of strength B = 0.5 mT to induce a voltage in the (same) coil.Calculate the expected voltage if she pulls the magnet from the coil in 0.02 seconds.

Given the circular coil shown below, calculate the magnitude of: a. Magnetic moment b. Torque on the coil B-2.3 T r=2.5 inch I=45.0A

A current of 5 A passing through a coil of 50 turns produces à field of 2x10 4T at the center of the coil. The radius of the coil is