11. An electric charge +Q is placed on the surface of a solid conduction sphere of radius a. The distance measured from the centre of the sphere is denoted as r. Then,
12. Consider a conducting loop of radius a and total loop resistance R placed in a region with a magnetic field B thereby enclosing a flux $${\phi _0}$$ . The loop is connected to an electronic circuit as shown, the capacitor being initially uncharged.
If the loop is pulled out of the region of the magnetic field at a constant speed u, the final output voltage Vout is independent of
If the loop is pulled out of the region of the magnetic field at a constant speed u, the final output voltage Vout is independent of