Problem 9: A current passing through a resistor (R = 25 2) decreases exponentially with time as I(t) = Ioe at where Io = 5.5 A and a =0.15 s-1.%3DPart (a) Calculate the energy dissipated by the resistor in joules during the first 10 seconds.E = ||sin()cos()tan()7 8 9НOMEE 1^ AL 4 5 61 2 3cotan()asin()acos()atan()acotan()sinh()cosh()tanh()cotanh()+ENDO DegreesRadiansVO BАСKSPАСЕDELCLEARSubmitHintFeedbackI give up!Part (b) Calculate the total energy dissipated by the resistor in joules as time goes to infinity.

Energy dissipation = VI t Since current is variable so energy dissipation can be calculated by…

Problem 9: A current passing through a resistor (R = 25 2) decreases exponentially with time as I(t) = Ioe-at where Io = 5.5 A and a = 0.15 s-l. Part (a) Calculate the energy dissipated by the resistor in joules during the first 10 seconds. E = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E 6 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() + END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!

Problem 9: A current passing through a resistor (R = 25 2) decreases exponentially with time as I(t) = Ioe-at where Io = 5.5 A and a = 0.15 s-l. Part (a) Calculate the energy dissipated by the resistor in joules during the first 10 seconds. E = sin() cos() tan() 7 8 9 HOME cotan() asin() acos() E 6 atan() acotan() sinh() 1 2 3 cosh() tanh() cotanh() + END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

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Problem 9: A current passing through a resistor (R = 25 2) decreases exponentially with time as I(t) = Ioe at where Io = 5.5 A and a =
0.15 s-1.
%3D
Part (a) Calculate the energy dissipated by the resistor in joules during the first 10 seconds.
E = ||
sin()
cos()
tan()
7 8 9
НOME
E 1^ AL 4 5 6
1 2 3
cotan()
asin()
acos()
atan()
acotan()
sinh()
cosh()
tanh()
cotanh()
+
END
O Degrees
Radians
VO BАСKSPАСЕ
DEL
CLEAR
Submit
Hint
Feedback
I give up!
Part (b) Calculate the total energy dissipated by the resistor in joules as time goes to infinity.

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Problem 7: A solenoid is created by wrapping a L = 35 m long wire around a hollow tube of diameter D = 4.5 cm. The wire diameter is d = 0.75 mm. The solenoid wire is then connected to a power supply so that a current of I = 4.5 A flows through the wire. Randomized Variables L= 35 m D= 4.5 cm d = 0.75 mm I= 4.5 A Part (a) Write an expression for the number of turns, N, in the solenoid. You do not need to take into account the diameter of the wire in this calculation. N = | 7 8 9. JT НOME d 1^ AL 4 5 6. a h 1 2 3 j k + END - m P VO BАСKSРАСE CLEAR DEL Submit Hint Feedback I give up! Part (b) Calculate the number of turns, N, in the solenoid. Part (c) Write an expression for the length of the solenoid (L2) in terms of the diameter of the hollow tube D, the length of the wire L and the diameter of the wire d. Assume it is constructed by using only 1 layer of loops (note that most solenoids are actually constructed with many layers, to maximize the magnetic field density). Part (d)…
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