If the sunlight is filtered so that only the 700 nm sunlight is shed on the Si solar cell, and the intensity of the 700 nm light is 20 mW/cm2 , what is the maximum possible current of the solar cell

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?