QuestionJuly 24, 2025

Topic: Transformers The voltage across the input terminals of a transformer is 120 V.The primary has 25 loops and the secondary has 50 loops.The voltage the transformer delivers is none of the available options 60V. 240 V. 30V. 120V.

Topic: Transformers The voltage across the input terminals of a transformer is 120 V.The primary has 25 loops and the secondary has 50 loops.The voltage the transformer delivers is none of the available options 60V. 240 V. 30V. 120V.
Topic: Transformers The voltage across the input terminals of a transformer is 120 V.The primary has 25 loops and the secondary has 50 loops.The voltage the transformer delivers is none of the available options 60V. 240 V. 30V. 120V.

Solution
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Answer

240 V. Explanation 1. Identify the Transformer Type This is a step-up transformer because the secondary has more loops than the primary. 2. Apply the Transformer Voltage Formula Use the formula for transformers: **\frac{V_s}{V_p} = \frac{N_s}{N_p}**, where V_s and V_p are the secondary and primary voltages, and N_s and N_p are the number of turns in the secondary and primary coils, respectively. 3. Calculate the Secondary Voltage Given V_p = 120\, V, N_p = 25, and N_s = 50, calculate V_s: V_s = V_p \times \frac{N_s}{N_p} = 120 \times \frac{50}{25} = 240\, V.

Explanation

1. Identify the Transformer Type<br /> This is a step-up transformer because the secondary has more loops than the primary.<br /><br />2. Apply the Transformer Voltage Formula<br /> Use the formula for transformers: **$\frac{V_s}{V_p} = \frac{N_s}{N_p}$**, where $V_s$ and $V_p$ are the secondary and primary voltages, and $N_s$ and $N_p$ are the number of turns in the secondary and primary coils, respectively.<br /><br />3. Calculate the Secondary Voltage<br /> Given $V_p = 120\, V$, $N_p = 25$, and $N_s = 50$, calculate $V_s$: <br /> $V_s = V_p \times \frac{N_s}{N_p} = 120 \times \frac{50}{25} = 240\, V$.
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