Engine : Electricity - 460/1386
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| In order to take a current reading with a 'clamp-on' ammeter, what should be the status of the jaws of the instrument? |
| A) must be fully closed so as to complete the magnetic circuit |
| B) must be held so as to not touch an adjacent conductor |
| C) should remain open while conducting measurements |
| D) must be clamped around all of the conductors of a cable |
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