With a voltage transformer having a 120 volt-amp capacity and a secondary coil voltage of 24 volts, what is the secondary input current?

With a voltage transformer having a 120 volt-amp capacity and a secondary coil voltage of 24 volts, what is the secondary input current?

• A. 2 amps
• B. 5 amps
• C. 10 amps
• D. 4 amps

Answer: (B)

To determine the secondary input current of a voltage transformer, the relationship between power (in volt-amps), voltage, and current can be utilized, expressed by the formula: \[ \text{Power (VA)} = \text{Voltage (V)} \times \text{Current (I)} \] In this case, the voltage transformer has a power rating of 120 volt-amps (VA) and a secondary voltage of 24 volts. We can rearrange the formula to solve for the current: \[ \text{Current (I)} = \frac{\text{Power (VA)}}{\text{Voltage (V)}} \] Substituting the given values into the formula, we have: \[ \text{Current (I)} = \frac{120 \text{ VA}}{24 \text{ volts}} \] Carrying out the division: \[ \text{Current (I)} = 5 \text{ amps} \] This calculation confirms that the secondary input current for the voltage transformer with the specified parameters is indeed 5 amps. This result aligns with the electrical principles governing transformers, where the relationship between power, voltage, and current is essential for proper functioning and analysis.

To determine the secondary input current of a voltage transformer, the relationship between power (in volt-amps), voltage, and current can be utilized, expressed by the formula:

[ \text{Power (VA)} = \text{Voltage (V)} \times \text{Current (I)} ]

In this case, the voltage transformer has a power rating of 120 volt-amps (VA) and a secondary voltage of 24 volts. We can rearrange the formula to solve for the current:

[

\text{Current (I)} = \frac{\text{Power (VA)}}{\text{Voltage (V)}}

]

Substituting the given values into the formula, we have:

[

\text{Current (I)} = \frac{120 \text{ VA}}{24 \text{ volts}}

]

Carrying out the division:

[

\text{Current (I)} = 5 \text{ amps}

]

This calculation confirms that the secondary input current for the voltage transformer with the specified parameters is indeed 5 amps. This result aligns with the electrical principles governing transformers, where the relationship between power, voltage, and current is essential for proper functioning and analysis.