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HEC ETC - USAT CS Entry Test - Physics - Current Electricity - Quiz 3

Practice 10 high yield MCQs on Physics from Chapter Current Electricity for USAT CS Entry Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 3 of the series.

21. What does Kirchhoff's second law state?



22. What is the application of Kirchhoff's laws?



23. What is true about current in a series circuit?



24. What is a Wheatstone bridge used for?



25. What happens to the galvanometer current when the Wheatstone bridge is balanced?



26. In a balanced Wheatstone bridge, P = 10 Ω, Q = 20 Ω, R = 15 Ω. What is S?



27. Which instrument uses the Wheatstone bridge principle?



28. What is a potentiometer used for?



29. What principle does a potentiometer work on?



30. What is the potential gradient in a potentiometer?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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