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ECAT Practice Physics Current Electricity MCQs Test 4
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ECAT Practice Physics Current Electricity MCQs Test 4

Practice ECAT 2026 Practice Test Physics MCQs from Current Electricity. Get instant results with Explanation.
Practice Quiz 4 for "Current Electricity" (Physics). Total 61 MCQs available, split into 7 quizzes. Start with the fundamentals and build a strong base. This area is highly tested in ECAT.
General10 MCQs
1. If the cross-sectional area of a conductor is doubled and the current is halved, what happens to the drift velocity of electrons?
2. A wire of resistance R is stretched to double its original length while its diameter is halved. What is the new resistance?
3. Two resistors of 10Ω and 30Ω are connected in series to a 12V battery. What is the ratio of power dissipated in the 10Ω resistor to the 30Ω resistor?
4. n identical resistors, each of resistance R, are connected in parallel to a 5A battery. If one resistor is removed, what is the new current through the battery?
5. A 12V battery delivers 10.8V when connected to a 4Ω resistor. What is the internal resistance of the battery?
General10 MCQs
6. A battery of EMF 12V and internal resistance 2Ω is connected to an external resistor. What is the maximum power that can be delivered to the external resistor?
7. A 5Ω and a 20Ω resistor are connected in parallel to a 12V battery. What is the current through the 5Ω resistor?
8. A wire of length L and resistance R is stretched to double its length. What is the new resistance of the wire?
9. A Wheatstone bridge has arms P = 10Ω, Q = 20Ω, R = 30Ω, and S is unknown. What value of S makes the bridge balanced?
10. A 3Ω and a 6Ω resistor are connected in parallel across a battery. What is the ratio of power dissipated in the 3Ω resistor to the 6Ω resistor?

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Conducting Body: UET
Frequency: Quarterly | Time: 100 Minutes
Negative Marking: No

⚡ Test Pattern (Total: 100 MCQs):

Merit Formula: Typically, the aggregate is calculated as: (ECAT × 33.33%) + (FSc Part-I × 16.67%) + (Matric × 50%). However, the respective university may revise its merit calculation formula or admission criteria from time to time. Please confirm the official criteria before applying.

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