Find the expression for electric field intensity in an axial position due to electric dipole.
A charge q is placed at one corner of the cube. The electric flux passing through any one of its face is
When a body charges by conduction, its mass
(A) Remains same
(B) Increases
(C)Decreases
(D)Increase or decrease
Two charges of 2uC and 5uC are placed 2.5 cm apart. The ratio of Coulomb's force experienced by them is
Electric charge between two bodies can be produced by
(A )Sticking
(B) Rubbing
(C) Oiling
(D) Passing AC current
Draw a graph to show the variation of resistance of a metal wire as a function of its diameter keeping its length and material constant.
Figure shows the field lines due to a positive charge. Is the work done by the field in moving a small positive charge from Q to P, positive or negative? Give reason.
A 10 V battery of negligible internal resistance is connected across a 200 V battery and a resistance of 38Ω as shown in the figure. Find the value of the current in the circuit.
Does the charge given to a metallic sphere depend on whether it is hollow or solid?
The plot of the variation of potential difference across a combination of three identical cells in series, versus current is shown below. What is the emf and internal resistance of each cell ?
What is the geometrical shape of equipotential surfaces due to an isolated charge ?