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If the primary power of an ideal transformer having a 2:1 voltage ratio is 100 W, the secondary power is

100 W
50 W
75 W
200 W

Correct Answer: 100 W

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More Questions from Transformers

A transformer is plugged into a 120 V rms source and has a primary current of 300 mA rms. The secondary is providing 18 V across a 10 Ω load. What is the efficiency of the transformer?
The transformer turns ratio determines
In the given circuit, the secondary voltage is in phase with the primary voltage.
Regardless of whether the transformer is step-up or step-down, power in the primary equals the power in the secondary if there is 100% efficiency.
The reflected load value that the source sees will always be larger than the load value itself.
If the current drawn in the secondary of a transformer increases, the power in the primary should remain the same.
The secondary voltages produced by a center-tapped transformer are equal in amplitude but 180° out of phase with respect to the center tap.
An open secondary winding of a transformer will cause the primary current to be nearly zero.
If voltage is stepped-up to the secondary, current will be stepped-down by the same amount.
A transformer that has 700 turns in the primary and 35 turns in the secondary has a turns ratio of 20:1.

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