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Two positive point charges of 12µc and 8µc are 10 cm apart each other. The work done in bringing them 4cm closer is

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

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(a) State which of the following are dimensionally current(i) Pressure = Energy per unit volume(ii) Pressure = Momentum × volume × time(b) The density of cylindrical rod was measured by the formula:- `P=(4m)/(piD^2I)`The percentage in m, D and l are `1%, 1.5% and 0.5%.` Calculate the % error in the calculated value of

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

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Calculate the degree of freedom for monatomic, diatomic and triatomic

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The quality factor of LCR circuit having resistance (R) and inductance (L) at resonance frequency `(omega)` is given

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An inductor of inductance L and resistor of resistance R are joined in series and connected by a source of frequency ω power dissipated in the circuit

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Find out the impedance of given

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Explain: A certain region of space is to be shielded from magnetic fields. Suggest a

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A ball of superconducting material is dipped in liquid nitrogen and placed near a bar magnet. What will be the direction of it’s magnetic

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Do magnetic forces obey Newton’s third law. Verify for two current elements`dl_1 = dl hatj ` located at the origin and `dl_2 = dl hatj ` located at (0, R, 0). Both carry current

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

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If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be

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

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The mag. field (B) at the centre of a circular coil of radius 'a', through which a current I flows

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If two streams of protons moive parallel to each other in the same direction, then

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A coil having N turns is wound tightly in the form of a spiral with inner and outer radii 'a' and 'b' respectively. When a current I passes through the coil, the magnetic field at the centre is

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

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When any coil is placed in a uniform mag. field torque is acting on it. The graph of `tau to theta`

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The variation of magnetic suceptibility `(chi)` with absolute temperature T for a termomagnetic material

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An iron rod of length L and magnetic moment M is bent in the form of a semi circle. Now its magnetic moment will

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

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Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given

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An object A has a charge of `-2muC` and the object B has a charge of `+6 muC`. Which of the following is

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

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Each corner A and C has charge `q_1` and on the each corner B and D, has charge `- q_2` of a square ABCD of side `l`. Charge at A is in equilibrium, then the ratio `q_1/q_2` will

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The figure shows some of the electric field lines corresponding to an electric field. The figure

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

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