Phase angle and frequency

When an alternating voltage is applied to a resistor connected in series with a coil, the ratio of peak voltage across the resistor to that across the coil depends on the frequency of the alternating voltage. It is suggested that this ratio is inversely proportional to the frequency of the alternating voltage. Design an experiment to investigate this relationship.

Possible solution.

Another variation to this problem.  There is a phase difference between the supply voltage and the voltage across the coil.  It is suggested that the phase angle between the coil voltage and the supply voltage is given by the equation

tan(Θ) = kf/√(k2.f2 +R2), where k is a constant and R is the resistance connected in series with the coil.  Design an experiment to investigate this relationship.

Possible solution.

Try out this problem.

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Posted on August 22, 2013, in Examples. Bookmark the permalink. Leave a comment.

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