Electric Field

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Electric Field: Overview

This topic consists of various concepts like Electric Field,Electric Field at a Point in Vector Form,Electric Field Due to Two or More Charges, etc.

Important Questions on Electric Field

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A charge q is placed at the centre of the line joining two equal charges Q. The system of three charges will be in equilibrium if

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A particle of mass 10 g is carrying a charge of 1.5×10-6 C. The particle stays in equilibrium under a given electric field. Find the magnitude and the direction of the electric field.

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ABC is an equilateral triangle whose each side is 0.05 m. At A and B are placed charges of+503×10-9 C and -503×10-9 C respectively. What will be magnitude and direction of the resultant field at C?

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Conduction electrons are almost uniformly distributed within a conducting plate. When placed in an electric field E, the electric field within the plate

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Find electric field intensity on finite line of charge.

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A charge Q is uniformly distributed over a semi-circular ring of radius R. A point charge q is kept on the centre of semi-circular ring as shown. The electrostatic force experienced by the point charge in given arrangement is

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In the following figure, the electric field on the y-axis will be maximum at y=

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Find the electric field at point P:

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When electric field is applied to the electrons in a conductor it starts

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Two point charges Q and -3Q are placed at some distance apart. If the electric field at the location of Q is E, the field at the location of -3Q is

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An unknown charge q is placed at the origin and another charge of 1 nano-coloumb is placed at position B(1,0,0). The x- component of the electric field due to these two charges at position A(2,1,2) is zero. Determine charge q.

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The force exerted by an electric field on a charge of +10 μC at a point is 16 x 10-4 N. The intensity of electric field is
 

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In a given region, electric potential varies with position as Vx= 3+2x2.

Identify which of the following statements is correct.

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What is electrostatics?

 

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Two charges of 50 μC and 100 μC are separated by a distance of 0.6 m. The intensity of electric field at a point midway between them is _____ ×106 V/m.

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Value of electric field for which e- will go undeflected will be _____.

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Here e and mare charge and mass of electron.

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Why electric field is zero at centre of regular polygon?

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A point charge -50 μC is located at 2,3. Find electric field at 8,-5.

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A point charge -50 μC is located at (2, 3). Find electric field at (8, -5).

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The charge Q=π C is distributed on thin semicircular ring of radius R=2 m. There is a uniform electrostatic field E=2 N C-1 directed horizontally. The semicircular ring can rotate freely about a fixed vertical axis AB. Initially the ring is in static equilibrium as shown in figure. If we want to rotate it about the fixed axis by 90°, then minimum work required on the ring is x J. Find the value of x.

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