Physics
A parallel plate air capacitor has capacity ′C′, distance of separation between plate is ′d′ and potential difference ′V′ is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is
18
Aug
A parallel plate air capacitor has capacity ′C′, distance of separation between plate is ′d′ and potential difference ′V′ is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is A parallel plate air capacitor has capacity ′C′ distance of separation between plate is ′d′ and potential difference [...]
In the given figure, a diode D is connected to an external resistance R=100Ω and an emf of 3.5V. If the barrier potential developed across the diode is 0.5V, the current in the circuit will be
18
Aug
In the given figure, a diode D is connected to an external resistance R=100Ω and an emf of 3.5V. If the barrier potential developed across the diode is 0.5V, the current in the circuit will be a diode D is connected to an external resistance R=100Ω and an emf of 3.5V. If the barrier potential [...]
An electric dipole of moment p is lying along a uniform electric field E. The work done in rotating the dipole by 90o is
18
Aug
An electric dipole of moment p is lying along a uniform electric field E. The work done in rotating the dipole by 90o is An electric dipole of moment p is lying along a uniform electric field E. The work done in rotating the dipole by 90o is August 18, 2020 Category: Chapter 20 - [...]
Three point charges +q,−2q and +q are placed at points (x = 0, y = a, z = 0),(x = 0, y = 0, z = 0) and (x = a, y = 0, z = 0), respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are
18
Aug
Three point charges +q,−2q and +q are placed at points (x = 0, y = a, z = 0),(x = 0, y = 0, z = 0) and (x = a, y = 0, z = 0), respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are (x=0 −2q [...]
An electric dipole of moment ‘p’ is placed in an electric field of intensity ‘E’. The dipole acquires a position such that the axis of the dipole makes an angle 0 with the direction of the field. Assuming that the potential energy of the dipole to be zero when θ=900, the torque and the potential energy of the dipole will respectively be
18
Aug
An electric dipole of moment ‘p’ is placed in an electric field of intensity ‘E’. The dipole acquires a position such that the axis of the dipole makes an angle 0 with the direction of the field. Assuming that the potential energy of the dipole to be zero when θ=900, the torque and the potential [...]
An electric dipole is placed at an angle of 30o with an electric field intensity 2×105N/C. It experiences a torque equal to 4Nm. The charge on the dipole, if the dipole length is 2 cm, is
18
Aug
An electric dipole is placed at an angle of 30o with an electric field intensity 2×105N/C. It experiences a torque equal to 4Nm. The charge on the dipole, if the dipole length is 2 cm, is An electric dipole is placed at an angle of 30o with an electric field intensity 2×105N/C. It experiences a [...]
As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge −Q from the point A [coordinates (0,a)] to another point B [coordinates (a,0)] along the straight path AB is
18
Aug
As per this diagram a point charge +q is placed at the origin O. Work done in taking another point charge −Q from the point A [coordinates (0,a)] to another point B [coordinates (a,0)] along the straight path AB is 0)] along the straight path AB is a)] to another point B [coordinates (a As [...]
Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is 4πϵ0q3k, where k is
18
Aug
Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is 4πϵ0q3k, where k is as shown in the figure. A [...]
Charges +q and −q are placed at points A and B respectively which are a distance 2L apart, C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is:
18
Aug
Charges +q and −q are placed at points A and B respectively which are a distance 2L apart, C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is: C is the midpoint between A and B. The work done in moving a charge +Q [...]
Three concentric spherical shells have radii a, b and c(a b c) and have surface charge densities +σ,−σ,+σ respectively. If VA,VB and VC denote the potentials of three shells, then for c=a+b, we have
18
Aug
Three concentric spherical shells have radii a, b and c(a b c) and have surface charge densities +σ,−σ,+σ respectively. If VA,VB and VC denote the potentials of three shells, then for c=a+b, we have +σ respectively. If VA −σ b and c(a b c) and have surface charge densities +σ then for c=a+b Three concentric [...]