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In an experiment to study magnetic induction , in the North Pole of a permanent magnet is moved left to right toward a coil having 20 turns at a constant speed of 20 cm/s. The induced peak voltage recorded by a voltmeter is +3.0 volts. The experiment is performed again with the only differences being that the South Pole of the magnet moved toward the coil at 25.0 cm/s.

(A) Is the voltage positive or negative?

(B) What is the value for the voltage?

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