Chapter 2 – Electrostatic Potential and Capacitance
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 2 - Electrostatic Potential and Capacitance
For current entering at A, the electric field at a distance r’ from A is:
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Dec
For current entering at A, the electric field at a distance r’ from A is: For current entering at A the electric field at a distance r' from A is: December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 2 - Electrostatic Potential and Capacitance , Volume 2 ,
ΔV measured between B and C is
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Dec
ΔV measured between B and C is ΔV measured between B and C is December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 2 - Electrostatic Potential and Capacitance , Volume 2 ,
A parallel plate capacitor with air between the plates has capacitance of 9pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k1=3 and thickness d3 while the other one has dielectric constant k2=6 and thickness 2d/3. Capacitance of the capacitor is now
05
Dec
A parallel plate capacitor with air between the plates has capacitance of 9pF. The separation between its plates is ‘d’. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant k1=3 and thickness d3 while the other one has dielectric constant k2=6 and thickness 2d/3. Capacitance of [...]
A charges Q is placed at each of the two opposite corners of a square. A charge q is placed to each of the other two corners. If the net electrical force on q is zero, then Q/q equals
05
Dec
A charges Q is placed at each of the two opposite corners of a square. A charge q is placed to each of the other two corners. If the net electrical force on q is zero, then Q/q equals A charges Q is placed at each of the two opposite corners of a square. A [...]
Two points P and Q are maintained at potentials of of 10V and −4V respectively. The work done in moving 100 electrons from P to Q is
05
Dec
Two points P and Q are maintained at potentials of of 10V and −4V respectively. The work done in moving 100 electrons from P to Q is Two points P and Q are maintained at potentials of of 10V and −4V respectively. The work done in moving 100 electrons from P to Q is December [...]
Let P(r)=Q/πR^4r be the charge density distribution for a solid sphere of radius R and total charge Q. For a point ‘p’ inside the sphere at distance r1 from the centre of the sphere, the magnitude of electric field is:
05
Dec
Let P(r)=Q/πR^4r be the charge density distribution for a solid sphere of radius R and total charge Q. For a point ‘p’ inside the sphere at distance r1 from the centre of the sphere, the magnitude of electric field is: Let P(r)=Q/πR^4r be the charge density distribution for a solid sphere of radius R and [...]
Let there be a spherically symmetric charge distribution with charge density varying as ρ(r)=ρ(5/4−r/R) up to r=R, and ρ(r)=0 for r>R, where r is the distance from the origin. The electric field at a distance r(r less then R) from the origin is given by
05
Dec
Let there be a spherically symmetric charge distribution with charge density varying as ρ(r)=ρ(5/4−r/R) up to r=R, and ρ(r)=0 for r>R, where r is the distance from the origin. The electric field at a distance r(r less then R) from the origin is given by and ρ(r)=0 for r>R Let there be a spherically symmetric [...]
A thin semi-circular ring of radius r has a positive charge q distributed uniformly over it. The net field E at the centre O is
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Dec
A thin semi-circular ring of radius r has a positive charge q distributed uniformly over it. The net field E at the centre O is A thin semi - circular ring of radius r has a positive charge q distributed uniformly over it. The net field E at the centre O is December 5, 2020 [...]
Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t is the time taken for the energy stored in the capacitor to be reduced to half its initial value and t2 is the time taken for the charge to reduce to one fourth its initial value Then the ratio t1/t2 will be
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Dec
Let C be the capacitance of a capacitor discharging through a resistor R. Suppose t is the time taken for the energy stored in the capacitor to be reduced to half its initial value and t2 is the time taken for the charge to reduce to one fourth its initial value Then the ratio t1/t2 [...]
The electrostatic potential inside a charged spherical ball is given by ϕ=ar^2+b where r is the distance from the centre and a, b are constants. Then the charge density inside the ball is:
05
Dec
The electrostatic potential inside a charged spherical ball is given by ϕ=ar^2+b where r is the distance from the centre and a, b are constants. Then the charge density inside the ball is: b are constants. Then the charge density inside the ball is: The electrostatic potential inside a charged spherical ball is given by [...]