Electronic Principles
One henry of inductance is defined as:

the amount of counter emf required to reduce a current to 1 A
the number of turns of wire in an inductor multiplied by the amount of current flowing through it
None of these
the amount of inductance required to change the frequency of a current by 1 Hz
the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second

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Electronic Principles
The south pole of a magnet is the one:

that would be attracted to the earth's south magnetic pole
None of these
that has its molecules arranged in a random pattern
that would be attracted to the earths north magnetic pole
that would be repelled by the north pole of another magnet

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