Qatar Senior Secondary Certificate (Thanaweya) · Physics and Chemistry
Classical Mechanics and Electromagnetism
109 practice questions, each with the answer and an explanation.
All 109 questions
- An ideal transformer has 1000 turns on the primary and 100 turns on the secondary, with 220 V on the primary. What is the secondary voltage?
- An ideal transformer has 200 turns on the primary and 50 turns on the secondary, with 400 V on the primary. What is the secondary voltage?
- An ideal transformer has 50 turns on the primary and 100 turns on the secondary, with 110 V on the primary. What is the secondary voltage?
- An ideal transformer has 100 turns on the primary and 400 turns on the secondary, with 12 V on the primary. What is the secondary voltage?
- A radioactive sample has 80 g of a nuclide. How much remains after 3 half-lives?
- A radioactive sample has 160 g of a nuclide. How much remains after 4 half-lives?
- A radioactive sample has 96 g of a nuclide. How much remains after 5 half-lives?
- A radioactive sample has 64 g of a nuclide. How much remains after 3 half-lives?
- A radioactive sample has 120 g of a nuclide. How much remains after 3 half-lives?
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