AP Intermediate 2nd Year Alternating Current — practice questions

Explore 2 free Alternating Current questions in AP Intermediate 2nd Year Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Alternating Current questions and exercises with answers

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If the secondary coil has more turns than the primary, the transformer is:Read the answer and worked solution →What is the approximate peak voltage of a 220 V household supply?Read the answer and worked solution →

Worked practice questions

If the secondary coil has more turns than the primary, the transformer is:

Step-off
Step-in
Step-up
Step-out

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Correct answer: C. Step-up

1. The turns ratio decides which way the voltage moves. 2. More turns on the secondary means a higher secondary voltage. 3. If the secondary has a greater number of turns, the voltage is stepped up. 4. That arrangement is called a step-up transformer. _Source: syllabus Physics Part I, Ch 7 'Alternating Current'_

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What is the approximate peak voltage of a 220 V household supply?

311 volts
211 volts
411 volts
511 volts

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Correct answer: A. 311 volts

1. The peak is the rms value multiplied by root two. 2. Root two is about 1.414. 3. That gives 1.414 times 220 volts. 4. The peak voltage is about 311 V. _Source: syllabus Physics Part I, Ch 7 'Alternating Current'_

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