Physics University of New Haven Paper This is a physics assignment read the questions carefully and please never copy anything online. . Please keep your w

Physics University of New Haven Paper This is a physics assignment read the questions carefully and please never copy anything online. . Please keep your work organized and neat.
• Be sure to turn this assignment in on time.
Supply a conceptual reasoning for why you are using certain physical laws, and equations. Any
equation or physical concept that is used without proper qualitative justification will receive a
deduction.
Question 1: A hollow cylindrical resistor with an inner radius r1, an outer radius 19, and of length 4, is made of a
material whose resistivity if p. Show that the resistance of such a wire comes out to be
R=
22
ਜਦ 11 (3)
for a current traveling radially outwards.
Hint: A is the surface area of the cylinder where the current flows through, not ar?.
Question 2: Answer the following questions:
a) A hair dryer draws 9.5A when plugged into a 120 V line. Calculate the resistance of the hair dryer, and how
much charge passes through it in 15 mimites, assuming a direct current.
b) An electric clothes dryer has a heating element with a resistance of 8.62. Calculate the current in the element
when it is connected a 240 V power source.
Question 3: Question 27-59 in Halliday & Resnick
What multiple of the time constant 7 gives the time taken by an initially uncharged capacitor in an RC series circuit
to be charged to 99.0% of its final charge?
Question 4: Small edit on Question 27-69 in Halliday & Resnick
A 3.00 MA resistor and a 1.00uF capacitor are connected in series with an ideal battery of emf & = 4.00 V. At 1.00
s after the connection is made, what is the rate at which (a) the charge of the capacitor is increasing, (b) energy is
being stored in the capacitor, and (c) thermal energy is appearing in the resistor?
Said differently, find the (a) current, (b) power going into the capacitor, and (c) the thermal power of the resistor.

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