Question { 8705 }

In which type of circuit short circuit is dangerous in
parallel or series and why?

Answer

Short circuit is dangerous in series circuit... Because current remains same for all loads that are connected in series. So all the loads wil be affected... Whereas in parellel circuit voltage remains same for all load and current wil be different. It depends on the load. If any fault occurs in a parellel circuit, the load which is having low resistance wil be affected... Nt all loads...

Question { 4072 }

how the length effects the ampacity of the cable? if a cable
is carrying a current of 100A for 50m length then what will
the effect on current if we double the length?

Answer

R=pL/A. So if u increase d length, then current will reduce...