Solving time: 4 mins
A spherical conductor of radius 12 cm has a charge of C distributed uniformly on its surface. What is the electric field
(a) inside the sphere(b) just outside the sphere(c) at a point 18 cm from the centre of the sphere?
Text solutionVerified
by Gauss law,
so,
Filo tutor solutions (2)
Learn from their 1-to-1 discussion with Filo tutors.
Practice more questions from Physics Part-I (NCERT)
Practice questions from Physics Part-I (NCERT)
Views: 5,841
(b) A man fixes outside his house one evening a two metre high insulating slab carrying on its top a large aluium sheet of area . Will he get an electric shock if he touches the metal sheet next morning?
(c) The discharging current in the atmosphere due to the small conductivity of air is known to be 1800 A on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged?
(d)
What
are the forms of energy into which the electrical energy of
the atmosphere is dissipated during a lightning?
(Hint: The earth
has an electric field of about 100 V at its surface in
the downward direction, corresponding to a surface charge
density = C. Due to the slight conductivity
of the atmosphere up to about 50 km (beyond which it is
good conductor), about + 1800 C is pumped every second into
the earth as a whole. The earth, however, does not get
discharged since thunderstorms and lightning occurring
continually allover the globe pump an equal amount of negative charge
on the earth.)
Views: 6,028
where is a unit vector normal to the surface at a point and is the surface charge density at that point. (The direction of is from side 1 to side 2.) Hence show that just outside a conductor, the electric field is
(b) Show that the tangential component of electrostatic field is continuous from one side of a charged surface to another. [Hint: For (a), use Gauss's law. For, (b) use the fact that work done by electrostatic field on a closed loop is zero.]
Views: 6,213
Views: 6,179
Practice more questions from Electrostatic Potential and Capacitance
Views: 5,935
Practice questions on similar concepts asked by Filo students
Views: 5,253
Views: 5,241
Views: 5,570
Stuck on the question or explanation?
Connect with our Physics tutors online and get step by step solution of this question.
Question Text | A spherical conductor of radius 12 cm has a charge of C distributed uniformly on its surface. What is the electric field (a) inside the sphere (b) just outside the sphere (c) at a point 18 cm from the centre of the sphere? |
Updated On | Apr 27, 2023 |
Topic | Electrostatic Potential and Capacitance |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 2 |
Upvotes | 264 |
Avg. Video Duration | 5 min |