A SMALL BULB RADIATES EM ENERGY IN ALL DIRECTIONS AT A DISTANCE OF 3.0m FROM THE SOURCE, THE RMS MAGNETIC FIELD IS 4.7 x 107 T. FIND THE AVERAGE POWER OF THIS SOURCE.

A 14.9m long steel beam is accidentally dropped by a construction crane from a height of 9.10 m. The horizontal component of the Earth's magnetic field over the region is 19.9μT. What is the induced emf in the beam just before impact with the Earth, assuming its long dimension remains in a horizontal plane, oriented perpendicularly to the horizontal component of the Earth's magnetic field?

A 52-turn coil with an area of 3.4 ✕10-3 m2 is dropped from a position where B = 0.00 T to a new position where B = 0.25 T. If the displacement occurs in 0.35 s, and the area of the coil is perpendicular to the magnetic field lines, what is the resulting average emf induced in the coil?

An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.00-T field with his fingers pointing in the direction of the field. Find the average emf induced in his wedding ring, given its diameter is 2.03 cm and assuming it takes 0.236 s to move it into the field.               mVIf the resistance of the ring is 1.00 mΩ, how much heat will be transferred to the ring during this time?                    mJ

A certain elastic conducting material is stretched into a circular loop of 12.0 cm radius. It is placed with its plane perpendicular to a uniform 0.800 T magnetic field.When released, the radius of the loop starts to shrink at an instantaneous rate of 75.0 cm/s.What emf is induced in the loop at that instant?

A 2.05 m length of wire is held in an east–west direction and moves horizontally to the north with a speed of 14.7 m/s. The vertical component of Earth's magnetic field in this region is 40.0 ?T directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive.  magnitude     mV positive end

Suppose a 50 turn coil lies in the plane of the page in a uniform magnetic field that is directed into the page. The coil originally has an area of 0.25 m2 . It is squished to have no area in 0.125 s. What is the magnitude of the average induced emf in volts if the uniform magnetic field has a strength of 1.5 T?

An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner’s 2.00 T field with his fingers pointing in the direction of the field. Find the average emf induced in his wedding ring in mV, given its diameter is 2.2 cm and assuming it takes 0.45 s to move it into the field.

A loop antenna of area 2.00 cm2 and resistance 5.21 m is perpendicular to a uniform magnetic field of magnitude 17.0 mT. The field magnitude drops to zero in 2.96 ms. How much thermal energy is produced in the loop by the change in field?

A 52-turn coil with an area of (5.5*10^-3)(m^2) is dropped from a position where B = 0.00 T to a new position where B = 0.55 T. If the displacement occurs in 0.25 s and the area of the coil is perpendicular to the magnetic field lines, what is the resulting average emf induced in the coil?