Correct option is A
The transient voltage that appears across the contacts at or near current zero during the arcing period is called restriking voltage.
Here are some more details about restriking voltage:
- Causes
The rapid distribution of energy between the magnetic and electric fields of the system causes this voltage.
- Effect on arc extinction
The voltage influences the arc extinction process, and the arc tries to restrike under its influence.
- Rate of rise
The rate of rise of restriking voltage (RRRV) depends on the inductance and capacitance of the system.
- Current interruption
The current interruption in the circuit depends on the restriking voltage.
