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ECAT Practice Physics Current Electricity MCQs Test 6
ECAT Quiz
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ECAT Practice Physics Current Electricity MCQs Test 6

Practice ECAT 2026 Practice Test Physics MCQs from Current Electricity. Get instant results with Explanation.
Practice Quiz 6 for "Current Electricity" (Physics). Total 61 MCQs available, split into 7 quizzes. Challenge yourself with advanced application-based questions. This area is highly tested in ECAT.
General10 MCQs
1. Three resistors of 3Ω, 5Ω, and 10Ω are connected in parallel. Which resistor dissipates the most power?
2. A wire has a resistance of 100Ω at 20°C and 120Ω at 100°C. What is the temperature coefficient of resistance of the wire?
3. Three resistors of 2Ω, 3Ω, and 5Ω are connected in series to a 20V battery. What is the power dissipated in the 3Ω resistor?
4. Two 10Ω resistors are connected in parallel to a battery. If one resistor is replaced by a 20Ω resistor, what is the percentage change in the total current?
5. If the current in a conductor is doubled and its cross-sectional area is halved, what happens to the drift velocity of electrons?
General10 MCQs
6. A wire of resistance R is stretched to three times its original length. What is the new resistance?
7. A battery has an EMF of 12V and internal resistance 0.2Ω. When a current of 5A is drawn, what is the terminal voltage?
8. A wire of resistance R is cut into two equal halves and the two halves are connected in parallel. What is the equivalent resistance?
9. A cell of EMF 1.5V balances at 60cm on a potentiometer. When a shunt of unknown resistance is connected across the cell, the balancing length becomes 30cm. What is the shunt resistance (given internal resistance of cell is 2Ω)?
10. A 10Ω and a 20Ω resistor are connected in series to a battery. What is the ratio of power dissipated in the 10Ω resistor to the 20Ω resistor?

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Frequency: Quarterly | Time: 100 Minutes
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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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