Recent questions tagged chapter2

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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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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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An isolated conducting sphere of charge Q and radius R is connected to a similar uncharged sphere (kept at a large distance) by using a high resistance wire. After a long time what is the amount of heat loss

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

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For a spherically symmetrical charge distribution, electric field at a distance r from the centre of sphere is `vecE=kr^7hatr`, where k is a constant. What will be the volume charge density at a distance r from the centre of sphere

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

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Two positrons `(e^+)` and two protons (p) are kept on four corners of a square of side a as shown in figure. The mass of proton is much larger than the mass of positron. Let q denotes the charge on the proton as well as the positron then the kinetic energies of one of the positrons and one of the protons respectively after a very long time will

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

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Four charges are placed at the circumference of a dial clock as shown in figure. If the clock has only hour hand, then the resultant force on a charge `q_0` placed at the centre, points in the direction which shows the time as

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

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A small electric dipole is placed at origin with its dipole moment directed along positive x-axis. The direction of electric field at point `(2, 2sqrt2,0)`

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

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Uniform electric field of magnitude 100 V/m in space is directed along the line `y= 3 + x`. Find the potential difference between point `A (3, 1) & B

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

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The diagram shows a uniformly charged hemisphere of radius R. It has volume charge density `rho`. If the electric field at a point 2R distance above its centre is E then what is the electric field at the point which is 2R below its

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

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A metallic rod of length `l` rotates at angular velocity `omega` about an axis passing through one end and perpendiuclar to the rod. If mass of electron is m and its charge is –e then the magnitude of potential difference between its two ends

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

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Consider a finite charged rod. Electric field at Point P (shown) makes an angle `theta` with horizontal dotted line then angle `theta` is

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

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The electric potential in a region is given by the relation `V(x) = 4 + 5x^2` . If a dipole is placed at position (–1,0) with dipole moment `vecp` pointing along positive Y-direction,

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

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What is the angular acceleration of the rod at the instant of releasing the rod? A thin homogeneous rod of mass m and length `l` is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ball of mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a constant horizontal electric field of magnitude mg `E=(mg)/(2q)`. The rod is released from shown position from

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

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What is the acceleration of the small ball at the instant of releasing the rod? A thin homogeneous rod of mass m and length `l` is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ball of mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a constant horizontal electric field of magnitude mg `E=(mg)/(2q)`. The rod is released from shown position from

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

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What is the speed of ball when rod becomes vertical? A thin homogeneous rod of mass m and length `l` is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ball of mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a constant horizontal electric field of magnitude mg `E=(mg)/(2q)`. The rod is released from shown position from

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

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A simple pendulum is suspended in a lift which is going up with an acceleration of `5 m'/'s^2` . An electric field of magnitude 5 N/C and directed vertically upward is also present in the lift . The charge of the bob is `1 muC` and mass is 1 mg . Taking `g=pi^2` and length of the simple pendulum 1m, find the time period of the simple pendulum (in

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

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The variation of potential with distance x from a fixed point is shown in figure. Find the magnitude of the electric field (in `V'/'m`) at `x

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

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The energy density u is plotted against the distance r from the centre of a spherical charge distribution on a log-log scale. Find the magnitude of slope of obtianed straight

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

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