WMI query issue in PowerShell

Answer 1

replace [$svr] with ServerName

Also, I'd change

foreach($Servers in $Servers) {


 getwmiinfo $Servers

}

to

foreach($Server in $Servers) {
 getwmiinfo $Server
}

Notice the variable name change in the foreach statement

Update

gwmi -query "select * from Win32_PhysicalMemory" | select __SERVER, DeviceLocator