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THIRD EXAMINATION DECEMBER 9 2020(1).docx - LIU PHYSICS OF...

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LIU PHYSICS OF PHARMACY (PHY 27)NAME_______________________________________________1.Three point 2.0 nC, 3.0 nC and - 5.0 nC charges are located at the corners of an equilateraltriangle in Fig.1. Find the direction and magnitude of the net force on the -5.0 nC charge, thelength of the side is 5 cm.2.In fig. 2 determine the points at which the total electric field is zero, if distance between twocharges is 3 m.3.The charge flowing through a light bulb attached to a 12.0-V battery in 5.0 s is 20.0 µC. What isthe total energy delivered to the filament during this process?4.4.Number 10 copper wire (radius = 1.3 mm) is commonly used for electrical installations inhomes. What is the voltage drop in 40 m of #10 copper wire if it carries a current of 10 A? (Theresistivity of copper is 1.7108m.)5.Resistors of values 10.0 Ω, 20.0 Ω, and 40.0 Ωare connected in parallel across a battery with asmall internal resistance. Which resistor dissipates the greatest power? Why?6.A square 2525 cm coil of wire consisting of 50 turns, , is positioned perpendicularly to a

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Term
Fall
Professor
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Tags
Magnetic Field, Electric charge, LIU PHYSICS OF PHARMACY

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