then
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of `2 m` when the cell is shunted by a `5 Omega` resistance, and is at a length of `3 m` when the cell is shunted by a `10 Omega` resistance. The internal resistance of the cell is, then
06
Dec
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of `2 m` when the cell is shunted by a `5 Omega` resistance, and is at a length of `3 m` when the cell is shunted by a `10 Omega` resistance. [...]
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Cengage JEE Mains Physics by B.M Sharma
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Chapter 20 - Heating Effects of Current and Instruments
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and is at a length of `3 m` when the cell is shunted by a `10 Omega` resistance. The internal resistance of the cell is ,
In an experiment to measure the internal resistance of a cell by potentiometer ,
it is found that the balance point is at a length of `2 m` when the cell is shunted by a `5 Omega` resistance ,
then ,
The temperature coefficient of resistance of conductor varies as alpha (T)=3T^2+2T. If R_0 is resistance at T = 0 and R is resistance at T, then.
06
Dec
The temperature coefficient of resistance of conductor varies as alpha (T)=3T^2+2T. If R_0 is resistance at T = 0 and R is resistance at T, then. The temperature coefficient of resistance of conductor varies as alpha (T)=3T^2+2T. If R_0 is resistance at T = 0 and R is resistance at T then December 6, 2020 [...]
A positively charge sphere of radius r0 carries a volume charge density ρ. A spherical cavity of radius r0/2 is then scooped out and left empty. C1 is the center of the sphere and C2 that of the cavity. What is the direction and magnitude of the electric field at point B?
06
Dec
A positively charge sphere of radius r0 carries a volume charge density ρ. A spherical cavity of radius r0/2 is then scooped out and left empty. C1 is the center of the sphere and C2 that of the cavity. What is the direction and magnitude of the electric field at point B? If the flux [...]
A nonconducting sphere of radius R is filled with uniform volume charge density −ρ. The center of this sphere is displaced from the origin by d→. The electric field E→ at any point P having position vector inside the sphere is
06
Dec
A nonconducting sphere of radius R is filled with uniform volume charge density −ρ. The center of this sphere is displaced from the origin by d→. The electric field E→ at any point P having position vector inside the sphere is If the flux of the electric field through a closed surface is zero then [...]
Consider an infinite line charge having uniform linear charge density and passing through the axis of a cylinder. What will be the effect on the flux passing through curved surface if the portions of the line charge outside the cylinder is removed
06
Dec
Consider an infinite line charge having uniform linear charge density and passing through the axis of a cylinder. What will be the effect on the flux passing through curved surface if the portions of the line charge outside the cylinder is removed If the flux of the electric field through a closed surface is zero [...]
A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R/2 from the centre?
06
Dec
A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R/2 [...]
If the flux of the electric field through a closed surface is zero, then
06
Dec
If the flux of the electric field through a closed surface is zero, then If the flux of the electric field through a closed surface is zero then December 6, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 17 - Electric Charge and Field ,
Charges are placed on the vertices of a square as shown. Let E→ be the electric field and V the potential at the centre. If the charges on A and B are interchanged with those on D and C respectively, then
05
Dec
Charges are placed on the vertices of a square as shown. Let E→ be the electric field and V the potential at the centre. If the charges on A and B are interchanged with those on D and C respectively, then Charges are placed on the vertices of a square as shown. Let E→ be [...]
Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by , ρ(r)=kr, where r is the distance from the centre. Two charge A and B, of –Q each, are placed on diametrically opposite points, at equal distance, a from the centre. If A and B do not experience any force, then:
05
Dec
Let a total charge 2Q be distributed in a sphere of radius R, with the charge density given by , ρ(r)=kr, where r is the distance from the centre. Two charge A and B, of –Q each, are placed on diametrically opposite points, at equal distance, a from the centre. If A and B do [...]
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Arihant Physics by D.C Pandey
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Chapter 2 - Electrostatic Potential and Capacitance
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Volume 2
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a from the centre. If A and B do not experience any force ,
are placed on diametrically opposite points ,
at equal distance ,
Let a total charge 2Q be distributed in a sphere of radius R ,
of –Q each ,
then ,
where r is the distance from the centre. Two charge A and B ,
with the charge density given by ,
ρ(r)=kr ,
Two electric bulbs rated at 25 W, 220 V and 100 W, 220 V are connected in series across a 220 V voltage source. If the 25 W and 100 W bulbs now draw powers P1 and P2 respectively, then
05
Dec
Two electric bulbs rated at 25 W, 220 V and 100 W, 220 V are connected in series across a 220 V voltage source. If the 25 W and 100 W bulbs now draw powers P1 and P2 respectively, then 220 V and 100 W 220 V are connected in series across a 220 V [...]