Which of the following is a correct statement? Select one O The electric energy density stored in any electric field is proportional to E O The currents passing through electronic devices connected in parallel are equal O The electric current density is a vector quantity O The capacitance of a capacitor determines its ability to store charge, and thus it can be positive quantity or negative quantity O The capacitance of a single isolated spherical conductor with radius R is proportional to R

Which of the following is a correct statement? Select one O The electric energy density stored in any electric field is proportional to E O The currents passing through electronic devices connected in parallel are equal O The electric current density is a vector quantity O The capacitance of a capacitor determines its ability to store charge, and thus it can be positive quantity or negative quantity O The capacitance of a single isolated spherical conductor with radius R is proportional to R

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter27: Capacitors And Batteries

Section: Chapter Questions

Problem 4PQ: The first Leyden jar was probably discovered by a German clerk named E. Georg von Kleist. Because...

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The first Leyden jar was probably discovered by a German clerk named E. Georg von Kleist. Because von Kleist was not a scientist and did not keep good records, the credit for the discovery of the Leyden jar usually goes to physicist Pieter Musschenbroek from Leyden, Holland. Musschenbroek accidentally discovered the Leyden jar when he tried to charge a jar of water and shocked himself by touching the wire on the inside of the jar while holding the jar on the outside. He said that the shock was no ordinary shock and his body shook violently as though he had been hit by lightning. The energy from the jar that passed through his body was probably around 1 J, and his jar probably had a capacitance of about 1 nF. a. Estimate the charge that passed through Musschenbroeks body. b. What was the potential difference between the inside and outside of the Leyden jar before Musschenbroek discharged it?
A pair of capacitors with capacitances CA = 3.70 F and CB = 6.40 F are connected in a network. What is the equivalent capacitance of the pair of capacitors if they are connected a. in parallel and b. in series?
(a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a negatively charged Van de Graff terminal? (b) What is unreasonable about this result? (c) Which assumptions are responsible?
A 6.50-F capacitor is connected to a battery. What is the charge on each plate of the capacitor if the voltage of the battery is a. 10.0 V and b. 2.00 V?
A lightning bolt strikes a tree, moving 20.0 C of charge through a potential difference of 1.00102 MV. (a) What energy was dissipated? (b) What mass of water could be raised from 15 °C to the boiling point and then boiled by this energy? (c) Discuss the damage that could be caused to the tree by die expansion of the boiling steam.
30 25 y = 0.8x + 1.2 %3D 20 15 10 15 20 25 30 For the plot and trendline equation above, the x-data is electric potential in volts (V) and the y-data is power in watts (W). What is the value of m? What is the value of b? w] 10
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I need to answer of 6th question
Find the voltage change when an electric field does 13 JJ of work on a 0.00011-CC charge. Express your answer to two significant figures and include the appropriate units. Find the voltage change when the same electric field does 26 JJ of work on a 0.00022-CC charge. Express your answer to two significant figures and include the appropriate units.
Question 5 only please.
A conducting sphere of radius R carries positive charge q. Calculate the amount of work that would be required to move a small positive test charge q0 slowly from r=4R to r=R/2. Assume that the presence of q0 has no effect on how the charge q is distributed over the sphere. Express your answer in terms of the electric constant ϵ0 and some or all of the variables q, q0, and R.