MEDIUM
12th Meghalaya Board
IMPORTANT
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and are two parallel concentric spheres enclosing charges and respectively as shown in the figure below. What is the ratio of electric flux through and ?
Important Questions on Electric Charges and Fields
MEDIUM
12th Meghalaya Board
IMPORTANT
Obtain an expression for the torque on an electric dipole placed in a uniform electric field.
EASY
12th Meghalaya Board
IMPORTANT
Using Gauss’s theorem in electrostatics, derive an expression for electric field at a point due to an infinitely long line of charge having a uniform charge density.
MEDIUM
12th Meghalaya Board
IMPORTANT
The force between two equal point charges separated by a certain distance is . If the distance between them is doubled and their individual charges are also doubled, then the force between them is
MEDIUM
12th Meghalaya Board
IMPORTANT
Use Gauss’s theorem to derive an expression for electric field due to a uniformly charged spherical shell at a point outside the shell.
MEDIUM
12th Meghalaya Board
IMPORTANT
State Gauss's law. Calculate the flux due to of positive charge. ()
HARD
12th Meghalaya Board
IMPORTANT
Use Gauss's law to obtain the expression for the electric field due to a uniformly charged infinite plane sheet.
MEDIUM
12th Meghalaya Board
IMPORTANT
Distinguish between polar and non-polar dielectrics.
EASY
12th Meghalaya Board
IMPORTANT
A wire of resistance and length is increased to twice its original length. Calculate its new resistance.
