Question

What is the maximum safe secondary current for a 40 VA transformer that has a primary voltage of 240 V and a secondary voltage of 24 V?

A. 0.1 A
B. 0.5 A
C. 1.0 A
D. 2.0 A

Answer 1

The maximum safe secondary current for the 40 VA transformer with a primary voltage of 240 V and a secondary voltage of 24 V is approximately 1.6667 A.

Step-by-step explanation:

To find the maximum safe secondary current for a transformer, we need to use the formula:

Is = P/Vs

Where:

• Is is the secondary current
• P is the power of the transformer (40 VA)
• Vs is the secondary voltage (24 V)

Substituting the given values into the formula, we get:

Is = 40 VA / 24 V = 1.6667 A

Therefore, the maximum safe secondary current for the transformer is approximately 1.6667 A.