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Electromagnetism

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Question 5

A step-down transformer has an input potential difference of 120 V. There are 500 turns on the primary coil and 100 turns on the secondary coil. The secondary coil is connected to a 0.30 kΩ0.30\text{ k}\Omega0.30 kΩ resistor. What is the current through the resistor?

A

8.0×10−5 A8.0 \times 10^{-5}\text{ A}8.0×10−5 A

B

0.08 A0.08\text{ A}0.08 A

C

0.40 A0.40\text{ A}0.40 A

D

12 A12\text{ A}12 A

Markscheme

Electromagnetism Questions

  1. A Level
  2. /Physics
  3. /Electromagnetism

34 exam-style questions on OCR A A Level Physics Electromagnetism, covering Magnetic fields, Motion of charged particles, and Electromagnetism. Each one has a worked solution and a mark scheme showing where the marks go.

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