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NUST NET - Practice Test - Physics - Current Electricity - Quiz 4

Practice 10 high yield MCQs on Physics from Chapter Current Electricity for Practice Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 4 of the series.

31. What is current density?



32. For which materials is Ohm's law valid?



33. What is the V-I characteristic of an ohmic resistor?



34. How does resistance depend on cross-sectional area?



35. How does resistance depend on length?



36. What is the voltage across a 10 Ω resistor with 2 A current?



37. What is the power of a 12 V battery supplying 3 A?



38. What is equivalent resistance of 4 Ω and 6 Ω in series?



39. What is equivalent resistance of 4 Ω and 6 Ω in parallel?



40. If length is doubled, what happens to resistance?



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

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