1.While testing a capacitor with ohm-metre, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

2.When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of

3.The sparking between two electrical contacts can be reduced by inserting a

4.In a capacitive circuit

5.A capacitor in a circuit became hot and ultimately exploded due to wrong con�nections, which type of capacitor it could be ?