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FTA Theory questions and answers 2026/2027 updates Graded A+ What is Extra Low Voltage (ELV) defined as? - Below 50V AC or Below 120V DC What is total internal reflection? - The complete reflection of light within a medium when it hits the boundary o
Preview 1 out of 4 pages
FTA Theory questions and answers 2026/2027 updates Graded A+ What is Extra Low Voltage (ELV) defined as? - Below 50V AC or Below 120V DC What is total internal reflection? - The complete reflection of light within a medium when it hits the boundary of a less dense medium at an angle greater
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