Magnetic Flux
A square coil, with dimensions l = 12.0 cm, w = 7.0 cm, is placed d = 3.0 cm above a wire that carries a current of 30.0 A. Find the magnetic flux through the wire.
![](/old/images/magneticflux.gif)
Related Problems
A magnetic field increases with time as described by the function, B(t) = 4 + 6t. Given a coil with 880 turns, N = 880, and an area A = (.05m), find the induced voltage in the coil.
As a steel guitar string vibrates, the component of the magnetic field perpendicular to the area of a pickup coil nearby is given by B(t) = 50 mT + (3.20 mT) Sin (1046t). The circular pickup coil has 30 turns, a radius of 2.70 mm, and a resistance of 0.10 . What is the magnitude of the maximum current induced in the coil?
A rectangular wire loop rests in a magnetic field as shown. Points Y and Z are grasped and pulled tight so that the area of the loop becomes zero. Determine the direction of the current through the resistor.
![](/old/images/lenzslaw3.gif)
A circular loop of wire is moving downwards towards a magnet as shown below. Find the direction of the induced current (viewed from above) as:
![](/old/images/inducedcurrent.gif)
A. the loop approaches the north pole
B. the loop moves past the south pole