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Engine : Electricity - 633/1386
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When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by a very specific megohmmeter pointer movement. What would be the characteristic of the pointer movement under these conditions?
A) continually rising as the test voltage is applied
B) dipping towards 'zero', then rising slowly
C) fluctuating around a constant resistance reading
D) kicking slightly downscale as voltage is applied
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