The primary coil of a step-up transformer is connected across the terminals of a

Question

The primary coil of a step-up transformer is connected across the terminals of a standard wall socket, and resistor 1 with a resistance R1 is connected across the secondary coil. The current in the resistor is then measured. Next, resistor 2 with a resistance R2 is connected directly across the terminals of the wall socket (without the transformer). The current in this resistor is also measured and found to be the same as the current in resistor 1. How does the resistance R2 compare to the resistance R1?

1) The resistance R2 is less than the resistance R1.

2) The resistance R2 is greater than the resistance R1.

3) The resistance R2 is the same as the resistance R1.

4) Insufficient information to answer.

Explanation / Answer

4. The information is insufficient to answer since the ratio of the two resistances are related to the ratio of the number of coils in the primary to the seconday coils

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