Explain how the potential difference across the resistor and the lamp will change when the switch is closed? The resistor

The lamp

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?

Which sound characteristic is not affected by the relative motion of an object

The total amount of energy contained in an object