Chapter 20 – Electric Field and Potential
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Faraday’s laws are consequence of conservation of
17
Aug
Faraday’s laws are consequence of conservation of Faraday's laws are consequence of conservation of August 17, 2020 Category: Chapter 20 - Electric Field and Potential , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is –
17
Aug
A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is – A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is - August 17, 2020 Category: Chapter 20 - Electric Field and Potential [...]
40 electric bulb are connected in series across a 220V supply. After one bulb is fused the remaining 39 are connected again in series across the same supply. The illumination will be
17
Aug
40 electric bulb are connected in series across a 220V supply. After one bulb is fused the remaining 39 are connected again in series across the same supply. The illumination will be 40 electric bulb are connected in series across a 220V supply. After one bulb is fused the remaining 39 are connected again in [...]
Two metal spheres, one of radius R and the other of radius 2R, both have same surface charge density σ. If they are brought in contact and separated, then the new surface charge densities on each of the sphere are respectively
17
Aug
Two metal spheres, one of radius R and the other of radius 2R, both have same surface charge density σ. If they are brought in contact and separated, then the new surface charge densities on each of the sphere are respectively both have same surface charge density σ. If they are brought in contact and [...]
Suppose the charge of a proton and an electron differ slightly. One of them is -e, the other is (e+Δe). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then Δe is of the order of [Given mass of hydrogen mh =1.67×10−27Kg]
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Aug
Suppose the charge of a proton and an electron differ slightly. One of them is -e, the other is (e+Δe). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero, then Δe is of the order of [Given mass [...]
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Suppose the charge of a proton and an electron differ slightly. One of them is -e ,
the other is (e+Δe). If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d (much greater than atomic size) apart is zero ,
then Δe is of the order of [Given mass of hydrogen mh =1.67×10−27Kg] ,
Two identical charged spheres suspended from a common point by two mass-less strings of length l are initially at a distance d ( dl) apart because of their mutual repulsion . The charge begins to leak from both the spheres at a constant rate. As a result the charge approach each other with a velocity v. Then as a function of distance x between them .
17
Aug
Two identical charged spheres suspended from a common point by two mass-less strings of length l are initially at a distance d ( dl) apart because of their mutual repulsion . The charge begins to leak from both the spheres at a constant rate. As a result the charge approach each other with a velocity [...]
Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes
17
Aug
Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F. If 25% charge of A is transferred to B, then force between the charges becomes are placed at certain distance apart and force acting between them is F. If 25% [...]
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become
17
Aug
Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become the equilibrium separation between them is r. Now the strings are rigidly clamped [...]
Four points charges -Q, -q, 2q and 2Q are placed one at each corner of the square. the relation between Q and q for which the potential at the center of the square is zero
17
Aug
Four points charges -Q, -q, 2q and 2Q are placed one at each corner of the square. the relation between Q and q for which the potential at the center of the square is zero -q 2q and 2Q are placed one at each corner of the square. the relation between Q and q for [...]
Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, then the number of electrons missing from each ion will be (e being the charge on an electron)
17
Aug
Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, then the number of electrons missing from each ion will be (e being the charge on an electron) are separated by a distance d. If F is the force of repulsion [...]