We are here with you hands in hands to facilitate your learning & don't appreciate the idea of copying or replicating solutions. Read More>>
+ Link For Assignments, GDBs & Online Quizzes Solution |
+ Link For Past Papers, Solved MCQs, Short Notes & More |
Dear Students! Share your Assignments / GDBs / Quizzes files as you receive in your LMS, So it can be discussed/solved timely. Add Discussion
How to Add New Discussion in Study Group ? Step By Step Guide Click Here.
Q # 1
A parallel plate air capacitor of capacitance 245pF has a charge of magnitude 0.148μC on each plate. The plates are 0.328mm apart.
(a) What is the potential difference between the plates?
(b) What is the area of each plate?
(c) What is the electric field magnitude between the plates?
(d) What is the surface charge density on each plate? Marks 8
Q # 2
A cylindrical copper cable 1.50Km long is connected across a 220.0V potential difference.
(a) What should be its diameter so that it produces heat at a rate of 50.0W?
(b) What is the electric field inside the cable under these conditions? Marks 6
Q # 3
A person with body resistance between his hands of 10KΩ accidently grasps the terminal of a 14-KV power supply.
(a) If the internal resistance of the power supply is 2000Ω, what is the current through the person’s body?
(b) What is the power dissipated in his body?
(c) If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the above situation to be 1.00mA or less? Marks 6
<Good Luck>>>>>>>>>>>>>>
Tags:
+ How to Follow the New Added Discussions at Your Mail Address?
+ How to Join Subject Study Groups & Get Helping Material? + How to become Top Reputation, Angels, Intellectual, Featured Members & Moderators? + VU Students Reserves The Right to Delete Your Profile, If?.
+ http://bit.ly/vucodes (Link for Assignments, GDBs & Online Quizzes Solution)+ http://bit.ly/papersvu (Link for Past Papers, Solved MCQs, Short Notes & More)
+ Click Here to Search (Looking For something at vustudents.ning.com?) + Click Here To Join (Our facebook study Group)Please Discuss here about this assignment.Thanks
Q#2:
First, the value of the length of the cable will be converted to meters.
Therefore, the length of the cable is L = 1.5*10^3 m = 1500 m.
We know, from enunciation, the value of potential difference:V = 220 volts
The power is given and it's value is of P = 50 Watts
P = V^2/R => R = V^2/P
Since the area of the section of the cable is circular, w'ell recall the formula for the area of the circle:
A = pi*r^2 (1)
A = p*L/R (2), where p = 1.72/10^8 ohm/m
We'll equate (1) and (2) and we'll get:
pi*r^2 = p*L*P/V^2
r^2 = p*L*P/V^2*pi
r = sqrt(p*L*P/V^2*pi)
Diameter is d = 2*r = 2*sqrt(p*L*P/V^2*pi)
d = 2*sqrt1.72*10^-10*15*5*10^3/484
d = 2*sqrt 1.72*10^-7*75/22
d = 1.0325/100
d = 0.010325 meters
The diameter of the cable is of d = 0.010325 meters, such as it is producing heat at a rate of 50W.
Q#1:
(a)we have q=cv where q=0.148μC
(remember we only put the magnitude of
one plate and we don't double it) and
c=245pF, so
v(potential difference)=604.08 volt
(b)c=(8.85*10^-12)*A/d where d=0.328mm,
so A(area)=9.08*10^-3 .
(c)v=Ed so E=v/d,
E(electric field)=1.84*10^6 v/m
(d)surface charge density=q/A=1.63*10^-5
PHY101 Assignment#04 Complete Solution Spring 2011
See the attached file please
© 2019 Created by + M.Tariq Malik. Powered by
Promote Us | Report an Issue | Privacy Policy | Terms of Service
VU Students reserves the right to delete any profile, which does not show any Activity at site nor has not any activity more than 01 month.
We are user-generated contents site. All product, videos, pictures & others contents on vustudents.ning.com don't seem to be beneath our Copyrights & belong to their respected owners & freely available on public domains. We believe in Our Policy & do according to them. If Any content is offensive in your Copyrights then please email at m.tariqmalik@gmail.com or Contact us at contact Page with copyright detail & We will happy to remove it immediately.
Management: Admins ::: Moderators
Awards Badges List | Moderators Group
All Members | Featured Members | Top Reputation Members | Angels Members | Intellectual Members | Criteria for Selection
Become a Team Member | Safety Guidelines for New | Site FAQ & Rules | Safety Matters | Online Safety | Rules For Blog Post