A lamp is connected to the power supply. The lamp requires an input potential difference of 5.0V The alternator gene

Question

A lamp is connected to the power supply.

The lamp requires an input potential difference of 5.0V

The alternator generates a potential difference of 1.5V

The primary coil of the transformer has 150 turns.

Calculate the number of turns needed on the secondary coil

Number of turns on the secondary coil = ?

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Minh Khuê 6 months 2021-08-04T20:16:03+00:00 1 Answers 7 views 0

Answers ( )

  1. thienthanh
    0
    2021-08-04T20:17:32+00:00
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    Answer:

    There are 45 turns in the secondary coil.

    Explanation:

    Given that,

    Input potential of the lamp, V_{in}=5\ V

    The output potential of the lamp, V_{out}=1.5\ V

    Number of turns in primary coil, N_P=150

    We need to find the number of turns needed on the secondary coil. We know that the ratio for a transformer is as follows :

    \dfrac{V_{out}}{V_{in}}=\dfrac{N_s}{N_P}\\\\N_s=\dfrac{V_{out}N_P}{V_{in}}\\\\N_s=\dfrac{1.5\times 150}{5}\\\\N_s=45\

    So, there are 45 turns in the secondary coil.

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