Human bodies are relatively good conductors. Explain.
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Human bodies are relatively good conductors. Explain.
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- 3:46 PM O t į v all & 88 Chapter 2 sprin 2021.p.. i. =- i 2 i2 Example 1 A hair dryer draws a current of 3 A. If it is switched on for 5 minutes, (a) how much charge, and (b) how many electrons have passed through it? • Solution: (a) By I = Q/t 3 = Q/ (5 x 60) Q = 900 C (b) charge of 1 electron = 1.6 x 10-19 C no. of electron = 900 / (1.6 x 10-19) = 5.625 x 1O21 Example Determine the total charge entering a terminal between t = 1s and t = 2 s if the current passing the terminal is i = (3t2 – t) A. Solution: 0 = i dt = (312 - t)dt - (^ -) = (8 – 2) - = 5.5 C The current flowing through a wire is given by Figure. Determine the net charge moving through the wire if q(0) = 0. Solution : The net charge moving through the wire is i(t) A 2 A 2t C 02. The two 10-cm-long parallel wires in the figure below are separated by 5.0 mm. For what value of the resistor R will the force between the two wires be 5.4 x 10-5 N? 9V 20 ww 10 cm 5.0 mmGood conductors of electricity are often good conductors of heat. Why might this be? We are currently learning about Electric Current in my physics 2 class to give some context.2. Electric current is measured in ampere (A). If an ampere is expressed as a flow of charge in coulombs per seconds (C/s), how many electrons passes at a given point for a conductor carrying 8A current in 1.5 minute? The charge on an electron is approximately 1.6 x 10 -19 C.a potential difference is applied across a conducting wire. The electrons in the wire will move with A. remain at rest b. non-zero contant average acceleration non zero contant drfit speed1a) To separate a 0.14 C charge from another charge, 26 J of work is done. What is the voltage of the 0.14 C charge?=__________ V 1b) How far does light travel in one year? [This distance is known as a light-year (ly) and is used in measuring astronomical distances.] =_________km 1c) What is the period of the wave motion for a wave with a frequency of 0.21 kHz?=_________ sWhich conductor would have the greatest resistance to the flow of charge entering from the left? Which would offer the least resistance? Explain the reason.2) An electron is accelerated from rest through a voltage difference of 50.0V. What is its final speed? (me = 9.2 x 10-31kg) %3D O 6.2 x 10^7 m/s None of the options listed O 1.2 x 10^8 m/s O 7.2 x 10^9 m/s O 4.2 x 10^6 m/s[Q9] A 60 watt light bulb carries a current of 0.5 amperes. What is the total charge passing through it in a time of 1 hour? 3,6000 C 3,000 C 2,400 C 1,800 C 120 C None of the above a. b. C. d. e. f.1) High voltage power lines are not covered with an insulating outer cover. a) What is the reasoning behind not putting on a protective insulating coating? b) Why are small birds not harmed when they land on these exposed high voltage wires?#1: High voltage power lines are not covered with an insulating outer cover. A) What is the reasoning behind not putting on a protective insulating coating? B) Why are small birds not harmed when they land on these exposed high voltage wires?d) What is the drift speed of the conduction electrons? What potential difference must exist between the ends of a 2.50-m length of the wire to e) produce the stated electric field?SEE MORE QUESTIONS