The faster the magnet moves, the greater the induced current. This is the principal behind simple electric generators in which a wire loop is rotated between to stationary magnetics. This produces a continuously varying voltage which in turn produces an alternating current . The faster we can get this crank turned, the more current we can generate. Electricity is generated at the generating plant at 120 Volts and then delivered to the households over conductors.
Heat dissipation is energy lost by the system.
A transformer uses alternating current in one coil to induce alternating current in another. This is why there are transformers on power lines to step the voltage down to 120 Volts by the time it reaches your house. And that's the way the world works.