Oh no! Your car isn't getting any power to its coil, one circuit breaker keeps tripping in your house or you can't figure out why the lamp on your nightstand flickers. Electrical problems like these are certainly annoying, but they're not necessarily the end of the world. With an ingenious little tool called a multimeter, you can safely diagnose gremlins like these -- and plenty of others. Once you know what's wrong with your vehicle's electrical system or that kitchen appliance that's on the fritz, you can make necessary repairs and stop ripping your hair out from frustration.
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