B M Sharma Solutions for Chapter: Electric Current and Circuits, Exercise 1: Concept Application Exercise
B M Sharma Physics Solutions for Exercise - B M Sharma Solutions for Chapter: Electric Current and Circuits, Exercise 1: Concept Application Exercise
Attempt the practice questions on Chapter 5: Electric Current and Circuits, Exercise 1: Concept Application Exercise with hints and solutions to strengthen your understanding. PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity solutions are prepared by Experienced Embibe Experts.
Questions from B M Sharma Solutions for Chapter: Electric Current and Circuits, Exercise 1: Concept Application Exercise with Hints & Solutions
A wire has a resistance What will be its resistance if
it is double on itself and
it is stretched so that
its length is doubled and its radius is halved.
If a copper wire is stretched to make it longer, what is the percentage change in its resistance?
The current density across a cylindrical conductor of radius varies in magnitude according to the equation, where, is the distance from the central axis. Thus, the current density is maximum at that axis and decreases linearly to zero at the surface . Calculate the current in terms of and the conductor's cross-sectional area .
The figure shows a conductor of length having a circular cross-section.
The radius of cross-section varies linearly from to . The resistivity of the material is . Assuming that , find the resistance of the conductor.
The space between the plates of a parallel plate capacitor is completely filled with a material of resistivity and dielectric constant . The capacity of the capacitor with the given dielectric medium between the plates is . Find the leakage current if a potential difference is applied across the capacitor.
A uniform copper wire of mass carries a current of when is applied across it. Calculate its length and area of cross-section. If the wire is uniformly stretched to double its length, calculate the new resistance. The density of copper is and resistivity is .
A hollow metallic sphere has an inner radius , outer radius and resistivity . If a potential difference is applied between the inner and outer surface. Find the (i) resistance between inner and outer surface (ii) total current
(iii) current density in the function of radial distance
(iv) electric field in the function of radial distance
A spherical shell of inner radius and outer radius is filled with a poorly conducting material whose resistivity varies with distance from its center as Find the resistance between the sphere's inner surface and the outer surface.