Recent questions tagged #sub

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For infinite line distribution of charge draw the curve between log E and log

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A point charge of `0.009 muC` is placed at origin. Calculate intensity of electric field due to this point charge at point `(sqrt2,

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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If =`–5x + 3y +sqrt15z` then find magnitude of electric field at point

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Calculate force on a dipole in the surrounding of a long charged wire as shown in the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A charge `2muC` is taken from infinity to a point in an electric field, without changing its velocity, if work done against electrostatic forces is `–40muJ` then potential at that point is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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`1muC` charge is shifted from A to B and it is found that work done by external force is `80muJ` against electrostic forces, find `V_A –

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A proton moves with a speed of `7.45×10^5 m'/'s` directly towards a free proton originally at rest. Find the distance of closest approach for the two protons. Given : `1/(4pi epsilon_0)= 9×10^9 (N-m)^2/c^2 ; m_p=1.67×10^(–27) kg and e = 1.6×10^(–19)

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A system has two charges `q_A=2.5×10^(–7) C and q_B = – 2.5 × 10^(–7) C` located at points `A: (0, 0, – 0.15 m) and B ; (0, 0, + 0.15 m)` respectively. What is the total charge and electric dipole moment of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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A short electric dipole is situated at the origin of coordinate axis with its axis along x–axis and equator along y–axis. It is found that the magnitudes of the electric intensity and electric potential due to the dipole are equal at a point distant `r=sqrt5 m` from origin. Find the position vector of the point in first

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Prove that the frequency of oscillation of an electric dipole of moment p and rotational inertia I for small amplitudes about its equilibrium position in a uniform electric field strength E is `1/(2pi)

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Brass has a tensile strength `3.5 × 10^8 N'/'m^2` . What charge density on this material will be enough to break it by electrostatic force of repulsion? How many excess electrons per square Å will there then be? What is the value of intensity just out side the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Prove that if an isolated (isolated means no charges are near the sheet) large conducting sheet is given a charge then the charge distributes equally on its two

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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If an isolated infinite sheet contains charge `Q_1` on its one surface and charge `Q_2` on its other surface then prove that electric field intensity at a point in front of sheet will be `Q/(2Aepsilon_0)`, where `Q=

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Three large conducting sheets placed parallel to each other at finite distance contains charges `Q, –2Q and 3Q` respectively. Find electric field at points `A, B , C, and

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Two conducting plates A and B are placed parallel to each other. A is given a charge `Q_1 and B` a charge `Q_2` . Prove that the charges on the inner facing surfaces are of equal magnitude and opposite sign. Also find the charges on inner & outer

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Figure shows three large metallic plates with charges `– Q, 3Q and Q` respectively. Determine the final charges on all the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An isolated conducting sheet of area A and carrying a charge Q is placed in a uniform electric field E, such that electric field is perpendicular to sheet and covers all the sheet. Find out charges appearing on its two surfaces.

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An uncharged conductor of inner radius `R_1` and outer radius `R_2` contains a point charge q at the centre as shown in figure.(i) Find `vecE and V` at points `A,B and C`.(ii) If a point charge Q is kept out side the sphere at a distance `‘r’ ( > > R_2)` from centre then find out resultant force on charge Q and charge

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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An uncharged conductor of inner radius `R_1` and outer radius `R_2` contains a point charge q placed at point P (not at the centre) as shown in figure? Find out the following :(i) `V_C` (ii) `V_A` (iii) `V_B` (iv) `E_A` (v) `E_B` (vi) force on charge Q if it is placed at

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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The two conducting spherical shells are joined by a conducting wire and cut after some time when charge stops flowing.Find out the charge on each sphere after

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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