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    Hi everyone, can you please help me with this question?

    Calculate the instantaneous value of the current i(t) = 3.6 sin (100π t + π/9) A at t = 16.6 ms. (Note that the argument to the trigonometric functions is given in radians.) Answer in either A or mA

    Thanks in advance
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    (Original post by mbooker)
    Hi everyone, can you please help me with this question?

    Calculate the instantaneous value of the current i(t) = 3.6 sin (100π t + π/9) A at t = 16.6 ms. (Note that the argument to the trigonometric functions is given in radians.) Answer in either A or mA

    Thanks in advance
    The equation is given in the form i_{t} = Asin(\omega t + \phi)

    where:

    \omega = 2 \pi f = 100 \pi

    A is the amplitude = 3.6

    Do the conversions and plug in the values.

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    Thanks so much for that, I get -2.3789A is that right?
    (Original post by uberteknik)
    The equation is given in the form i_{t} = Asin(\omega t + \phi)

    where:

    \omega = 2 \pi f = 100 \pi

    A is the amplitude = 3.6

    Do the conversions and plug in the values.

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    (Original post by mbooker)
    Thanks so much for that, I get -2.3789A is that right?
    Hi is my answer getting on the mark, just trying to see if on right track

    I get -2.3789A is that right?
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    (Original post by mbooker)
    Hi is my answer getting on the mark, just trying to see if on right track

    I get -2.3789A is that right?
    Yes. Make sure you round the answer to be consistent with the number of significant figures given in the question. i.e. -2.38A
 
 
 
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