The alternating current I in ampere (A) in a circuit is represented by the equation: I =

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The alternating current I in ampere (A) in a circuit is represented by the equation:

I = 2.0 sin (50πt).

a. State the peak value of the current.

b. Calculate the frequency of the alternating current.

c. Sketch a graph to show two cycles of the variation of current with time. Mark the axes with suitable values.

d. Calculate I_r.m.s., the r.m.s. value of current, and mark this on your graph in part c.

e. Determine two values of time t at which the current I = I_r.m.s..

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Cambridge International AS And A Level Physics Coursebook

ISBN: 9781108859035

3rd Edition

Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside

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Question Posted: Sep 30, 2021 01:33 AM

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The alternating current I in ampere (A) in a circuit is represented by the equation: I =

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Cambridge International AS And A Level Physics Coursebook

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