An ac voltage source of amplitude 10v is supplied across an inductor and a resistor wired in series. the voltage amplitude across the inductor is 5v. the voltage amplitude across the resistor is closest to:

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

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?

What is the measurement of how fast an object moves relative to a reference point?