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ECAT Practice Physics Current Electricity MCQs Test 5
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ECAT Practice Physics Current Electricity MCQs Test 5

Practice ECAT 2026 Practice Test Physics MCQs from Current Electricity. Get instant results with Explanation.
Practice Quiz 5 for "Current Electricity" (Physics). Total 61 MCQs available, split into 7 quizzes. Test your understanding of core concepts. This area is highly tested in ECAT.
General10 MCQs
1. Three resistors of 2Ω, 3Ω, and 6Ω are connected in parallel to a 6V battery. What is the total current drawn from the battery?
2. If the voltage across a resistor is doubled, how does the power dissipated in the resistor change?
3. A battery has an internal resistance of 0.5Ω and delivers a current of 2A. If the terminal voltage is 11V, what is the EMF of the battery?
4. Three resistors of 10Ω, 20Ω, and 30Ω are connected in series to a 120V battery. What are the voltage drops across each resistor?
5. Two resistors of 2Ω and 4Ω are connected in series to a battery. The same current passes through both. What is the ratio of heat produced in the 4Ω resistor to the 2Ω resistor?
General10 MCQs
6. To measure current in a circuit with a resistance of R using an ammeter, what should be the resistance of the ammeter so that the error in current measurement is less than 1%?
7. To measure voltage across a resistance R using a voltmeter, what should be the resistance of the voltmeter so that the error in voltage measurement is less than 1%?
8. In a potentiometer experiment, a cell of EMF 1.5V balances at 60cm. Another cell balances at 40cm on the same potentiometer. What is the EMF of the second cell?
9. If the radius of a conductor is doubled, and the current remains the same, what happens to the drift velocity of electrons?
10. A wire of resistance R is melted and recast to half its original length. What is the new resistance of the wire?

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ECAT

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

⚡ Test Pattern (Total: 100 MCQs):

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