A rectangular loop of wire with sides 0.221 and 0.444 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.770 T and is directed parallel to the normal of the loop's surface. In a time of 0.136 s, one-half of the loop is then folded back onto the other half, as indicated in part b of the drawing. Determine the magnitude of the average emf induced in the loop. Number X X X X X X PØ x X X x X Units (a) X X X X X X x X X (b) X X X X x X

The figure below shows wire 1 in cross-section; the wire is long and straight, carries a current of 3.90 mA out of the page, and is a distance d1 = 2.40 cm from a surface. Wire 2, which is parallel to wire 1 and also long, is at horizontal distance d2 = 4.80 cm from wire 1 and carries a current of 6.80 mA into the page. What is the x component of the magnetic force per unit length on wire 2 due to wire 1? __________N/m (please show units. It really helps me out)

The figure below shows a cross section of a long thin ribbon of width w = 6.42 cm that is carrying a uniformly distributed total current i = 4.76 μA into the page. Calculate the magnitude of the magnetic field at a point P in the plane of the ribbon at a distance d = 2.73 cm from its edge. (Hint: Imagine the ribbon as being constructed from many long, thin, parallel wires.) Number i Units x X X X X -x W

A square coil of wire of side 3.90 cm is placed in a uniform magnetic field of magnitude 2.50 T directed into the page as in the figure shown below. The coil has 39.0 turns and a resistance of 0.780 Ω. If the coil is rotated through an angle of 90.0° about the horizontal axis shown in 0.335 s, find the following. A square coil is shown in the plane of the page, and inside the coil a magnetic field points into the page. A horizontal rotation axis passes through the middle of the square. An arrow indicates that the square rotates clockwise on the axis when viewed from the left.   (a) the magnitude of the average emf induced in the coil during this rotation                          mV(b) the average current induced in the coil during this rotation                          mA

A rectangular loop of wire with sides 0.214 and 0.594 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.740 T and is directed parallel to the normal of the loop's surface. In a time of 0.153 s, one-half of the loop is then folded back onto the other half, as indicated in part b of the drawing. Determine the magnitude of the average emf induced in the loop. Number IN i m X DO X X X (a) Units X T (b) X X X X X

In the figure below, the current in the long, straight wire is I₁ = 6.10 A, and the wire lies in the plane of the rectangular loop, which carries 14.2 A. The dimensions shown are c = 0.100 m, a = 0.150 m, and l = 0.450 m. Find the magnitude and direction of the net force exerted by the magnetic field due to the straight wire on the loop. N magnitude direction to the right ←c- X I₂ O

A single rectangular loop of area 3.14 m2 carries a current of 10.0 mA.  It is placed in a uniform magnetic field of magnitude 0.500 T that is directed parallel to the plane of the loop as shown in the figure. The current is clockwise in the loop. (a) What is the magnitude of the torque exerted on the loop by the magnetic field? (b) Describe how the loop would rotate, such as which side could move out of page, you can draw the directions...show your reasoning steps. e.g. which rule you use.