An electric lamp is connected to battery an inductor .How can you change the intensity of lamp without changing current or voltage in coil ?
Since you have a battery the inductor will have only a transient influence on the circuits current. An equivalent circuit for an inductor is its resistance in series with its inductance. V(t)R i(t) + L di(t)/dt + R(lamp) i(t) R- resistance of the inductor R(lamp)- resistace of the lamp L - inductance Once the steady state is established we will have V(t)R i(t) + R(lamp) i(t) Opening or shortening the winding will collapse or induce the field. Fast collapse of the field can produce a high voltage spike However I would not recommend an inductor a dimming control in a DC circuit.
