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Pavel [41]
3 years ago
7

How to round numbers and find significant digits in physics?? Simple answer? Please???

Physics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

Heya how have you been doing

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How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns
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Complete Question

How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns.

The output from the secondary coil is  12 V

Answer:

The value  is  N_s  =  21 \  turns

Explanation:

From the equation we are told that

   The input voltage is  V_{in}  = 120 \ V

   The number of turns of the primary coil is N_p =  210 \  turn

    The output from the secondary is V_o =  12V

From the transformer equation

   \frac{N_p}{V_{in}}  =\frac{N_s}{V_o}

Here N_s is the number of turns in the secondary coil

=> N_s  =  \frac{N_p}{V_{in}}  *  V_s

=>N_s  =  \frac{210}{120}  *  12

=>N_s  =  21 \  turns

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3 years ago
1.)State which definition of power below is correct.
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