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If C1 = 3pF and C2 = 2pF, calculate the equivalent capacitance of the given network between points A &

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

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Prove that energy stored per unit volume in a capacitor is given by `1/2∈_o E^2` , where E is the electric field of the

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

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Keeping the voltage of the charging source constant. What would be the percentage change in the energy stored in a parallel plate capacitor if the separation between its plates were to be decreased by

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

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Two identical plane metallic surfaces A and B are kept parallel to each other in air separated by a distance of 1.0 cm as shown in the figure. Surface A is given a positive potential of 10V and the outer surface of B is earthed.(a) What is the magnitude and direction of uniform electric field between point Y and Z? What is the work done in moving a change of 20 µc from point X to Y?(b) Can we have non-zero electric potential in the space, where electric field strength is

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

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Given a cube with point charges q on each of its vertices. Calculate the force exerted on any of the charges due to rest of the 7

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

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Five point charges, each of value +q are placed on five vertices of a regular hexagon of side Lm. What is the magnitude of the force on a point charge of value –q coulomb placed at the centre of the

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

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Calculate the electric field intensity E which would be just sufficient to balance the weight of an electron. If this electric field is produced by a second electron located below the first one what would be the distance between them? [Given : `e=1.6 × 10^(-19) C, m = 9.1 × 10^(–31) kg and g = 9.8

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 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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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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Find charge on each spherical shell after joining the inner most shell and 1 outer most shell by a conducting wire. Also find charges on each

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

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Two conducting hollow spherical shells of radii `R and 2R` carry charges – Q and 3Q`` respectively. How much charge will flow into the earth if inner shell is grounded

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

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The figure shows four situations in which charges as indicated `(q > 0)` are fixed on an axis. How many situations is there a point to the left of the charges where an electron would be in

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

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Which of the following functions of time represent (a) simple harmonic, (b) periodic but not simple harmonic, and (c) non-periodic motion? Give period for each case of periodic motion (ω is any positive constant):

asked Mar 20, 2022 in 11th Physics by varun (6.7k points)

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What is phase difference?

asked Mar 20, 2022 in 11th Physics by varun (6.7k points)

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Weather the following is periodic or not?

asked Mar 20, 2022 in 11th Physics by varun (6.7k points)

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Science, like any knowledge, can be put to good or bad use, depending on the user. Given below are some of the applications of science. Formulate your views on whether the particular application is good, bad or something that cannot be so clearly categorised : (a) Mass vaccination against

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Science, like any knowledge, can be put to good or bad use, depending on the user. Given below are some of the applications of science. Formulate your views on whether the particular application is good, bad or something that cannot be so clearly categorised : (a) Computers for

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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