Once you have verified that the power cord provides an adequate electrical connection, you will have to test that the cable is not shorted.

Test for a potential short circuit by touching each prong on the AC side of the power cord.

If the multimeter beeps, your power cord is bad and must be replaced immediately.

If your power cord is shorted, do not attempt to replug the cord into the AC outlet.

If your power cord has passed all of the steps above, then you have successfully tested that your power cord is in working order.