es. The leaves of an electroscope always move apart regardless of the sign of the charges on the leaf and the main body) since these charges are always of opposite sign. In the case of alternating current the force of interaction between the leaves and the main body will act in the same direction during both half periods, the leaves will be attracted to the main body and therefore the average value of this force during one period will not be zero: the leaves will move apart a distance which will depend on the voltage of the circuit. ⋅
216 SOLUTIONS