WAEC - Physics (2000 - No. 38)
A device used to prevent wearing away of the make and-brake contacts of an induction coil is called a\an
fuse
electroscope
resistor
capacitor
解释
A capacitor can be used in circuits with induction coils to smooth out voltage spikes and reduce arcing at the contacts. It helps absorb sudden changes in voltage, thereby minimizing wear and prolonging the life of the contacts.