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Capacitors

Q1:

If an open capacitor is checked with an ohmmeter, the needle will:

A stay on zero

B stay on infinity

C move from zero to infinity

D move from infinity to zero

ANS:B - stay on infinity

Since an ohmmeter uses its internal battery to measure the resistance by applying a small amount of DC current, Xc would be infinite because the voltage provided by a battery has no frequency thus 1/(2*pi*0*c) = infinite).



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