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Richard B
How does a current clamp work? View All
How does a current clamp measure the current flowing in a conductor, if it's not wired electrically into the same circuit as the conductor?

11 years ago - 11 months left to answer. - 1 response - Report Abuse
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When a current flows in a conductor, a magnetic field is produced which encircles the conductor. A current clamp basically does the opposite: a central ferromagnetic core in the clamp conducts the magnetic flux. A coil is wound around this central core and a voltage is induced due to the magnetic flux flowing in the core. This voltage is proportional to the original current in the main conductor, and in this way the current can be calculated. Have a look at Maxwell's equations for calculation purposes.

11 years ago


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