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Atransformer changes 200 v across the primary 12 v across the secondary. if the secondary coil has 10 turns how many turns does the primary coil have?

Answers

  • Réponse publiée par: 09389706948

    the answer is B 80turns

    Explanation:

    Hello!

    Remember that a transformer is an electrical device that allows you to change the voltage and current levels keeping the electric power constant, in this order of ideas the equation that governs this device is as follows

    \frac{Vs}{Vp} =\frac{Ns}{Np}\\

    where

    Vp= primary voltage=120V

    Vs= secondary voltage=1200V

    Ns=turns of secondary=800

    Np=turns of primary

    now we solve for Np

    \frac{Vs}{Vp} =\frac{Ns}{Np}\\\\Np=Ns\frac{Vp}{Vs} \\

    Np=800\frac{120}{1200}=80turns

    the answer is B 80turns

  • Réponse publiée par: nicole8678

    answer:

    777 777

    step-by-step explanation:

    trying to help. i think my answer is correct

  • Réponse publiée par: hajuyanadoy

    answer:

    yes.

    step-by-step explanation:

    q: do you think you can apply the same concept in simplifying a rational algebraic expression?

    yes, through applying the concept of factoring and greatest common factor or gcf can be used in order to simplify a rational algebraic expression.

    for example:

    \frac{10x + 25y}{5}

    the value of the numerator is 10x + 25y. 10 and 25 has a factor of 5, hence, it can be written in such a way that it is factored by 5.

    10x + 25y = 5 (2x + 5y)

    when we multiple 2x + 5y by 5, we will arrive to the same given.

    after factoring the numerator, we will look in the denominator to see if the common factor in the numerator be possible to divide or cancel. in this case:

    \frac{5 * (2x + 5y)}{5}

    5 can be cancelled from both numerator and denominator as long as there is no subtraction or addition involved with 5. hence, we will arrive to the following solution:

    \frac{(2x + 5y)}{1} = 2x + 5y

    code: 8.3.1.2.1.

    for more information about fractions, kindly refer to the following link/s:

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Atransformer changes 200 v across the primary 12 v across the secondary. if the secondary coil has 1...