To limit current chopping in vacuum circuit breakers, the contact material employed should have the properties of

Low conductivity and low vapour pressure.

Low conductivity and high vapour pressure.

High conductivity and high vapour pressure.

High conductivity and low vapour pressure.

To limit current chopping in vacuum circuit breakers, the contact mate

1.	To limit current chopping in vacuum circuit breakers, the contact material employed should have the properties of
A.	Low conductivity and high vapour pressure.
B.	Low conductivity and low vapour pressure.
C.	High conductivity and high vapour pressure.
D.	High conductivity and low vapour pressure.
Answer» B. Low conductivity and low vapour pressure.