A flat coil having 160 turns, each with an area of 0.20 m2, is placed with the plane of its area perpendicular to a magnetic field of 0.40 T
The magnetic field changes uniformly from 0.40 T in the +x direction to 0.40 T in the -x direction in 2.0 s. If the resistance of the coil is 16 ?, at what rate is power generated in the coil during this change?
A) 5.0 W
B) 10 W
C) 15 W
D) 20 W
B
You might also like to view...
Who is credited with the origins of scientific thought?
What will be an ideal response?
Freddy Frog drops vertically from a tree onto a horizontally-moving skateboard. The reason he doesn't slip off the skateboard is due to
A) inertia in motion. B) momentum change. C) friction between his feet and the board.
The coolest white-dwarf: Surveys have been carried out to identify isolated white-dwarfs throughout the galaxy and its globular clusters
They have been found to span a range of temperatures, with a sharp lower limit of about 3000 K (i.e. many have been found at all temperatures from 10s of thousands of Kelvin down to 3000K, but none cooler). What does this observation reveal about the age of our galaxy?
A grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known,
but light of a known wavelength of 632.8 nm is deflected by 43.2° in the second order by this grating. Light of the wavelength to be measured is deflected by 34.9° in the second order. What is the wavelength of the light that is to be measured?