1.A coil of wire of one turn has a cross-sectional area of 0.09 m². A magnetic field of 0.5 T passes through the coil perpendicular to the plane of the coil. What is the total magnetic flux through the coil?
2. A coil of wire is situated in 0.4T uniform magnetic field. The area of the coil is 4.0m². What is the magnetic flux if the angle between the magnetic field and the normal to the surface of the coil is 60⁰ ? After 5s, the magnetic field is now parallel to the normal to the surface.
3. A straight wire carrying a current of 15A and a magnetic field of 2.7 x 10-6 T, what is the radius?
4. The earth's magnetic field over northern Canada points straight down. The crew of a Boeing 747 aircraft flying at 280m/s over northern Canada finds a 0.95 V potential difference between the wing tips. The wing span of a Boeing 747 is 70 m. What is the magnetic field strength there?
