A 50-turn coil has a diameter of 15 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.50 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil if the magnetic field is reduced to zero uniformly in (a) 0.10 s, (b) 1.0 s, and (c) 60 s.

Induced EMF Below is a closed conducting loop within a magnetic field (for direction see picture). The loop is a circle with a radius of r = 5.00 cm. The magnetic field is decreasing in the direction shown at a rate of dB/dt = 157.0 mT/s. The circle wire has 305.0 loops around it. The wire has a total resistance of R = 2.80 Ohms. Magnetic Field (into the page) 8) What is the induced current around the wire in this system? (use a negative value for a clockwise current) Make sure to give your answer in an appropriate number of significant figures as well as including units with your answer. Your Answer: Answer units PLEASE TAKE OUT TRASH AT EOS IG

b.) Find the net magnetic field at P. 10.) When a magnetic field is first turned on, the magnetic flux through a 10-turn coil varies over time. The equation for the magnetic flux is m = 200.0t2 – 120.0t, where the magnetic flux is measured in webers, and the t is in minutes. The loop is in the plane of the page, with the unit normal pointing out of the page. dºm a.) Calculate an expression for dt b.) Find an equation for the induced emf as a function of time.

A metal rod moves with constant velocity along two parallel metal rails connected with strip of metal at one side as shown in Figure. A magnetic field B = 0.35 T points outof the page. If the rails are separated by distance ZL = 25 cm and the speed of the rod isv= 55 cm/s, find a) the induced emf and direction of induced currentb) the amount of heat released in this system in 3 min if the rod has resistance of 18 Qand the rails have negligible resistance.