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MDCAT Practice Test - Practice Test - Physics - Current Electricity - 2026 Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Physics - Current Electricity (Year 2026) | Quiz 6

51. How do emf and internal resistance combine for cells in series?



52. For n identical cells in parallel, effective emf and internal resistance are:



53. Wire A has resistance R. Wire B has twice the length and half the cross-sectional area of A. What is resistance of B?



54. A wire has resistance 100 Ω at 0°C. α=0.004 /°C. Find resistance at 50°C.



55. A battery of emf 12 V supplies 2 A to a 4 Ω resistor. Find internal resistance.



56. A source has emf 10 V and internal resistance 5 Ω. What is the maximum power that can be delivered to a load?



57. Three resistors 2 Ω, 3 Ω, 5 Ω in series with 10 V battery. Find voltage across 3 Ω.



58. A 12 V battery is connected to parallel combination of 4 Ω and 6 Ω. Find current through 6 Ω resistor.



59. A 100 W and a 60 W bulb are rated for 220 V. Which statement is correct?



60. Two identical cells (1.5 V, 0.5 Ω) in series power a 2 Ω resistor. Find terminal voltage of one cell.



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