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The direction of the gradient of a scalar field V gives the direction in which

(a) V increases at the highest rate

(b) V decreases at the highest rate

(c) V remains constant for small distances

(d) V changes its sign

(Note:- This question have one or more than one correct choice(s) out of the four given choices. Any number of options may be correct.)
The electric field in an electrostatic situation is denoted by the function E and the potential by the function V in a certain volume. Inside this volume,

(a) If E is given, V can be uniquely written.

(b) If V is given, E can be uniquely written.

(c) If E is same everywhere in the volume, V cannot change in this volume.

(d) If V is same everywhere in the volume, E cannot change in this volume.

(Note:- This question have one or more than one correct choice(s) out of the four given choices. Any number of options may be correct.)

Charge is distributed on the surface of a sphere with a surface charge density σ=σ0 cos θ in spherical coordinates. This distribution is


(a) Spherically Symmetric


(b) cylindrically symmetric


(c) Planar Symmetric


(d) none of these


(Note:- This question have one or more than one correct choice(s) out of the four given choices. Any number of options may be correct.)


an electron is stationary in electric field 0.8 V/m find Lorenz force on it.
what is electric charge.
A charge of 5C charge is placed at origin and a charge of 3C find at 2meter distance find force due to charge on each other

Explain compressibility.which type of material has higher compressibility?


why is pressure is scalar quantity?
A person is at 25 meters and ends at 2 meters and the trip took 4.5 seconds. What was the average speed

A closed circular coil having a diameter of 50 cm made of 200 turns of wire with a total resistance of 10 Ω is placed with its plane at right angles to a magnetic field of strength of 10-2 T. Calculate the quantity of electric charge passing through it when the coil is turned through 1800 about an axis in its plane. 


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