QUESTION $1$

In Example $2,$ if the breakdown occurred when the gap distance was increased to $0\mathrm{.}9$ cm$,$ what is the value of $?$

QUESTION $2$

What will be the breakdown voltage of a spark gap in a gas at pr $=760$ torr at $25$C if A $=15/$cm$,$ B $=360/$cm$,$ d $=1$ mm and $=1\mathrm{.}5104?$

QUESTION $3$

What is the minimum spark$-$over voltage of the above gap in QUESTION $2$ if $=104$ with all other parameters remaining the same.

QUESTION $4$

What is the critical threshold distance for sustained discharge if $=2\mathrm{.}43/$cm and $=6\mathrm{.}823104.$