run powershell.exe/cmd.exe as Administrator in powershell and use current working directory as its working directory

RunAsAdmin.psl

# open a new powershell
# full version: 
  $arg = '-NoExit -Command "& {cd '+ "'" + $pwd + "'"+ '}"'
  Start-Process Powershell -ArgumentList $arg -Verb runAs
# simplified version: 
  $arg = '-noexit -c "& {cd '+ "'" + $pwd + "'"+ '}"'
  start powershell -a $arg -v runas

# open a new cmd
# full version: 
  $arg = '/k cd "' + $pwd + '"'
  Start-Process cmd -ArgumentList $arg -Verb runAs
# simplified version: 
  $arg = '/k cd "' + $pwd + '"'
  start cmd -a $arg -v runas