Navigation Menu
Home Blog Latest Notices
100% Free

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

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

21. At a junction, I₁=2A enters, I₂=3A enters, and I₃ leaves. What is I₃?



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



23. What is a Wheatstone bridge used for?



24. What is the balance condition for a Wheatstone bridge?



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



26. Which instrument uses the Wheatstone bridge principle?



27. What is a potentiometer used for?



28. What principle does a potentiometer work on?



29. What is the potential gradient in a potentiometer?



30. Why is a potentiometer more accurate than a voltmeter?



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

Medical Colleges in Pakistan

Explore medical institutions city‑wise – public & private.

Browse All Medical Colleges →