The potential due to a dipole at a point P from it is the a) Sum of potentials at the charges b) Difference of potentials at the charges c) Multiplication of potentials at the charges d) Ratio of potentials at the charges

The potential due to a dipole at a point P from it is the
a) Sum of potentials at the charges
b) Difference of potentials at the charges
c) Multiplication of potentials at the charges
d) Ratio of potentials at the charges
by

1 Answer

Answer :

b) Difference of potentials at the charges
by

Related questions

Find the potential due the dipole when the angle subtended by the two charges at the point P is perpendicular. a) 0 b) Unity c) ∞ d) -∞

Description : Find the potential due the dipole when the angle subtended by the two charges at the point P is perpendicular. a) 0 b) Unity c) ∞ d) -∞

Last Answer : a) 0

The potential due to the dipole on the midpoint of the two charges will be a) 0 b) Unity c) ∞ d) -∞

Description : The potential due to the dipole on the midpoint of the two charges will be a) 0 b) Unity c) ∞ d) -∞

Last Answer : a) 0

Calculate the distance between two charges of 4C forming a dipole, with a dipole moment of 6 units. a) 1 b) 1.5 c) 2 d) 2.5

Description : Calculate the distance between two charges of 4C forming a dipole, with a dipole moment of 6 units. a) 1 b) 1.5 c) 2 d) 2.5

Last Answer : b) 1.5

Calculate the dipole moment of a dipole with equal charges 2C and -2C separated by a distance of 2cm. a) 0.02 b) 0.04 c) 0.06 d) 0.08

Description : Calculate the dipole moment of a dipole with equal charges 2C and -2C separated by a distance of 2cm. a) 0.02 b) 0.04 c) 0.06 d) 0.08

Last Answer : b) 0.04

Choose the best definition of a dipole. a) A pair of equal and like charges located at the origin b) A pair of unequal and like charges located at the origin c) A pair of equal and unlike charges separated by a small distance d) A pair of unequal and unlike charges separated by a small distance

Description : Choose the best definition of a dipole. a) A pair of equal and like charges located at the origin b) A pair of unequal and like charges located at the origin c) A pair of equal and unlike charges separated by a small distance d) A pair of unequal and unlike charges separated by a small distance

Last Answer : c) A pair of equal and unlike charges separated by a small distance

Find the angle at which the potential due a dipole is measured, when the distance from one charge is 12cm and that due to other is 11cm, separated to each other by a distance of 2cm. a) 15 b) 30 c) 45 d) 60

Description : Find the angle at which the potential due a dipole is measured, when the distance from one charge is 12cm and that due to other is 11cm, separated to each other by a distance of 2cm. a) 15 b) 30 c) 45 d) 60

Last Answer : d) 60

Six equal point charges Q = 10nC are located at 2,3,4,5,6,7m. Find the potential at origin. a) 140.35 b) 141.35 c) 142.35 d) 143.35

Description : Six equal point charges Q = 10nC are located at 2,3,4,5,6,7m. Find the potential at origin. a) 140.35 b) 141.35 c) 142.35 d) 143.35

Last Answer : d) 143.35

The total polarisation of a material is the a) Product of all types of polarisation b) Sum of all types of polarisation c) Orientation directions of the dipoles d) Total dipole moments in the material

Description : The total polarisation of a material is the a) Product of all types of polarisation b) Sum of all types of polarisation c) Orientation directions of the dipoles d) Total dipole moments in the material

Last Answer : b) Sum of all types of polarisation

For two charges 3C and -3C separated by 1cm and are located at distances 5cm and 7cm respectively from the point P, then the distance between their midpoint and the point P will be a) 5.91 b) 12.6 c) 2 d) 9

Description : For two charges 3C and -3C separated by 1cm and are located at distances 5cm and 7cm respectively from the point P, then the distance between their midpoint and the point P will be a) 5.91 b) 12.6 c) 2 d) 9

Last Answer : a) 5.91

Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment

Description : Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment

Last Answer : b) Ratio of dipole moment to electric field

The dipole formation in a magnet is due to a) Interaction between the north and south poles together b) Interaction between the north pole with the air c) Interaction between the south pole with the air d) Interaction of north and south pole separately with air

Description : The dipole formation in a magnet is due to a) Interaction between the north and south poles together b) Interaction between the north pole with the air c) Interaction between the south pole with the air d) Interaction of north and south pole separately with air

Last Answer : a) Interaction between the north and south poles together

If the potential is given by, V = 10sin θ cosφ/r, find the density at the point P(2, π/2, 0) (in 10 -12 units) a) 13.25 b) 22.13 c) 26.31 d) 31.52

Description : If the potential is given by, V = 10sin θ cosφ/r, find the density at the point P(2, π/2, 0) (in 10 -12 units) a) 13.25 b) 22.13 c) 26.31 d) 31.52

Last Answer : b) 22.13

Find the potential of the function V = 60cos θ/r at the point P(3, 60, 25). a) 20 b) 10 c) 30 d) 60

Description : Find the potential of the function V = 60cos θ/r at the point P(3, 60, 25). a) 20 b) 10 c) 30 d) 60

Last Answer : b) 10

Find the potential due to a charged ring of density 2 units with radius 2m and the point at which potential is measured is at a distance of 1m from the ring. a) 18π b) 24π c) 36π d) 72π

Description : Find the potential due to a charged ring of density 2 units with radius 2m and the point at which potential is measured is at a distance of 1m from the ring. a) 18π b) 24π c) 36π d) 72π

Last Answer : d) 72π

A point charge 0.4nC is located at (2, 3, 3). Find the potential differences between (2, 3, 3)m and (-2, 3, 3)m due to the charge. a) 2.5 b) 2.6 c) 2.7 d) 2.8

Description : A point charge 0.4nC is located at (2, 3, 3). Find the potential differences between (2, 3, 3)m and (-2, 3, 3)m due to the charge. a) 2.5 b) 2.6 c) 2.7 d) 2.8

Last Answer : c) 2.7

In a dipole, the Gauss theorem value will be a) 1 b) 0 c) -1 d) 2

Description : In a dipole, the Gauss theorem value will be a) 1 b) 0 c) -1 d) 2

Last Answer : b) 0

Find the current in a dipole with a moment of 16 units and area of 9 units. a) 1.78 b) 2.78 c) 1.87 d) 2.34

Description : Find the current in a dipole with a moment of 16 units and area of 9 units. a) 1.78 b) 2.78 c) 1.87 d) 2.34

Last Answer : a) 1.78

Find the orbital angular moment of a dipole with angular velocity of 1.6m/s and radius 35cm(in 10-31 order) a) 1.78 b) 8.71 c) 7.18 d) 2.43

Description : Find the orbital angular moment of a dipole with angular velocity of 1.6m/s and radius 35cm(in 10-31 order) a) 1.78 b) 8.71 c) 7.18 d) 2.43

Last Answer : a) 1.78

Find the orbital dipole moment in a field of dipoles of radius 20cm and angular velocity of 2m/s(in 10 -22 order) a) 64 b) 76 c) 54 d) 78

Description : Find the orbital dipole moment in a field of dipoles of radius 20cm and angular velocity of 2m/s(in 10 -22 order) a) 64 b) 76 c) 54 d) 78

Last Answer : a) 64

The best definition of polarisation is a) Orientation of dipoles in random direction b) Electric dipole moment per unit volume c) Orientation of dipole moments d) Change in polarity of every dipole

Description : The best definition of polarisation is a) Orientation of dipoles in random direction b) Electric dipole moment per unit volume c) Orientation of dipole moments d) Change in polarity of every dipole

Last Answer : b) Electric dipole moment per unit volume

The permittivity is also called a) Electrostatic energy b) Dielectric constant c) Dipole moment d) Susceptibility

Description : The permittivity is also called a) Electrostatic energy b) Dielectric constant c) Dipole moment d) Susceptibility

Last Answer : b) Dielectric constant

Debye is the unit used to measure a) Permittivity b) Electric dipole moment c) Magnetic dipole moment d) Susceptibility

Description : Debye is the unit used to measure a) Permittivity b) Electric dipole moment c) Magnetic dipole moment d) Susceptibility

Last Answer : b) Electric dipole moment

Dipole moments are used to calculate the a) Electric field intensity b) Polarisation patterns c) Strength of the dipole in the field d) Susceptibility

Description : Dipole moments are used to calculate the a) Electric field intensity b) Polarisation patterns c) Strength of the dipole in the field d) Susceptibility

Last Answer : b) Polarisation patterns

Sum of e.m.f around any loop equals A. sum of current B. sum of potential difference C. sum of resistances D. sum of charges passing through it per second

Description : Sum of e.m.f around any loop equals A. sum of current B. sum of potential difference C. sum of resistances D. sum of charges passing through it per second

Last Answer : sum of potential difference

Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have to measure the cell potential to obtain the difference in potential energy because the potential of half-reactions cannot be measured directly. C The direction of a redox reaction can only be determined experimentally. D Half-cell potentials for half-reactions are determined by combining the relevant half-cell with a standardised half-cell.

Description : Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have ... half-reactions are determined by combining the relevant half-cell with a standardised half-cell.

Last Answer : C The direction of a redox reaction can only be determined experimentally. 

Potential difference is the work done in moving a unit positive charge from one point to another in an electric field. State True/False. a) True b) False

Description : Potential difference is the work done in moving a unit positive charge from one point to another in an electric field. State True/False. a) True b) False

Last Answer : a) True

Find the potential of V = 60sin θ/r 2 at P(3,60,25) a) 5.774 b) 6.774 c) 7.774 d) 8.774

Description : Find the potential of V = 60sin θ/r 2 at P(3,60,25) a) 5.774 b) 6.774 c) 7.774 d) 8.774

Last Answer : a) 5.774

Find the potential between two points p(1,-1,0) and q(2,1,3) with E = 40xy i + 20x 2 j + 2 k a) 104 b) 105 c) 106 d) 107

Description : Find the potential between two points p(1,-1,0) and q(2,1,3) with E = 40xy i + 20x 2 j + 2 k a) 104 b) 105 c) 106 d) 107

Last Answer : c) 106

Find the electric field due to charge density of 1/18 and distance from a point P is 0.5 in air(in 10 9 order) a) 0 b) 1 c) 2 d) 3

Description : Find the electric field due to charge density of 1/18 and distance from a point P is 0.5 in air(in 10 9 order) a) 0 b) 1 c) 2 d) 3

Last Answer : c) 2

The inductance is the measure of a) Electric charges stored by the material b) Emf generated by energising the coil c) Magnetic field stored by the material d) Magnetization of dipoles

Description : The inductance is the measure of a) Electric charges stored by the material b) Emf generated by energising the coil c) Magnetic field stored by the material d) Magnetization of dipoles

Last Answer : c) Magnetic field stored by the material

Identify the advantage of using method of images. a) Easy approach b) Boundaries are replaced by charges c) Boundaries are replaced by images d) Calculation using Poisson and Laplace equation

Description : Identify the advantage of using method of images. a) Easy approach b) Boundaries are replaced by charges c) Boundaries are replaced by images d) Calculation using Poisson and Laplace equation

Last Answer : a) Easy approach

Which of the following properties distinguish a material as conductor, insulator and semiconductor? a) Free electron charges b) Fermi level after doping c) Energy band gap d) Electron density

Description : Which of the following properties distinguish a material as conductor, insulator and semiconductor? a) Free electron charges b) Fermi level after doping c) Energy band gap d) Electron density

Last Answer : c) Energy band gap

The electrostatic energy in an electric field does not depend on which of the following? a) Magnitude of charges b) Permittivity c) Applied electric field d) Flux lines

Description : The electrostatic energy in an electric field does not depend on which of the following? a) Magnitude of charges b) Permittivity c) Applied electric field d) Flux lines

Last Answer : c) Applied electric field

Find the electric field intensity of two charges 2C and -1C separated by a distance 1m in air. a) 18 X 10 9 b) 9 X 10 9 c) 36 X 10 9 d) -18 X 10 9

Description : Find the electric field intensity of two charges 2C and -1C separated by a distance 1m in air. a) 18 X 10 9 b) 9 X 10 9 c) 36 X 10 9 d) -18 X 10 9

Last Answer : b) 9 X 10 9

A charge of 2 X 10 -7 C is acted upon by a force of 0.1N. Determine the distance to the other charge of 4.5 X 10 -7 C, both the charges are in vacuum. a) 0.03 b) 0.05 c) 0.07 d) 0.09

Description : A charge of 2 X 10 -7 C is acted upon by a force of 0.1N. Determine the distance to the other charge of 4.5 X 10 -7 C, both the charges are in vacuum. a) 0.03 b) 0.05 c) 0.07 d) 0.09

Last Answer : d) 0.09

Find the force between two charges when they are brought in contact and separated by 4cm apart, charges are 2nC and -1nC, in μN. a) 1.44 b) 2.44 c) 1.404 d) 2.404

Description : Find the force between two charges when they are brought in contact and separated by 4cm apart, charges are 2nC and -1nC, in μN. a) 1.44 b) 2.44 c) 1.404 d) 2.404

Last Answer : c) 1.404

Two charges 1C and -4C exists in air. What is the direction of force? a) Away from 1C b) Away from -4C c) From 1C to -4C d) From -4C to 1C

Description : Two charges 1C and -4C exists in air. What is the direction of force? a) Away from 1C b) Away from -4C c) From 1C to -4C d) From -4C to 1C

Last Answer : c) From 1C to -4C

Charges filled inside a cylindrical will possess flux in which direction? a) Upwards b) Downwards c) Laterally outwards d) Inwards

Description : Charges filled inside a cylindrical will possess flux in which direction? a) Upwards b) Downwards c) Laterally outwards d) Inwards

Last Answer : c) Laterally outwards

The necessary condition for phase equilibrium in a multiphase system of N components is that the (A) Chemical potentials of a given component should be equal in all phases (B) Chemical potentials of all components should be same in a particular phase (C) Sum of the chemical potentials of any given component in all the phases should be the same (D) None of these

Description : The necessary condition for phase equilibrium in a multiphase system of N components is that the (A) Chemical potentials of a given component should be equal in all phases (B) Chemical potentials of all ... potentials of any given component in all the phases should be the same (D) None of these

Last Answer : (A) Chemical potentials of a given component should be equal in all phases

Two half-reactions of an electrochemical cell are given below : MnO–4 (aq) + 8H+ (aq) + 5e– → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + 2e–, E° = + 0.15 V. Construct the redox reaction equation from the two half-reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Description : Two half-reactions of an electrochemical cell are given below : MnO-4 (aq) + 8H+ (aq) + 5e- → Mn2+ (aq) + 4H2O (I), E° = 1.51 V Sn2+ (aq) → Sn4+ (aq) + ... -reactions and calculate the cell potential from the standard potentials and predict if the reaction is reactant or product favoured. -Chemistry

Last Answer : The reactions can be represented at anode and at cathode in the following ways : At anode (oxidation) : Sn2+ → Sn4+ (aq) + 2e- ] 5 E° = + 0.15 V Af cathode (reduction) : MnO-4(aq) + 8H+ ( ... = E°cathode - E°anode = 1.51 - 0.15 = + 1.36 V ∴ Positive value of E°cell favours formation of product.

If a manager tries to form territories with equal sales potential, the territories will usually be unequal in geographic size; this will cause the salespersons with larger territories to A)develop larger income potentials. B)have to work longer and harder to generate a certain sales volume. C)work about the same amount, since potential is the same. D)have much larger sales than those salespeople with smaller territories.

Description : If a manager tries to form territories with equal sales potential, the territories will usually be unequal in geographic size; this will cause the salespersons with larger territories to A)develop ... potential is the same. D)have much larger sales than those salespeople with smaller territories.

Last Answer : B)have to work longer and harder to generate a certain sales volume.

Find the electric field of a potential function given by 20 log x + y at the point (1,1,0). a) -20 i – j b) -i -20 j c) i + j d) (i + j)/20

Description : Find the electric field of a potential function given by 20 log x + y at the point (1,1,0). a) -20 i – j b) -i -20 j c) i + j d) (i + j)/20

Last Answer : a) -20 i – j

Find the potential at a point (4, 3, -6) for the function V = 2x 2 y + 5z. a) 96 b) 66 c) 30 d) -66

Description : Find the potential at a point (4, 3, -6) for the function V = 2x 2 y + 5z. a) 96 b) 66 c) 30 d) -66

Last Answer : b) 66

A point charge 2nC is located at origin. What is the potential at (1,0,0)? a) 12 b) 14 c) 16 d) 18

Description : A point charge 2nC is located at origin. What is the potential at (1,0,0)? a) 12 b) 14 c) 16 d) 18

Last Answer : d) 18

What is the potential difference between 10sinθcosφ/r 2 at A(1,30,20) and B(4,90,60)? a) 2.386 b) 3.386 c) 4.386 d) 5.386

Description : What is the potential difference between 10sinθcosφ/r 2 at A(1,30,20) and B(4,90,60)? a) 2.386 b) 3.386 c) 4.386 d) 5.386

Last Answer : c) 4.386

The potential difference in an open circuit is a) Zero b) Unity c) Infinity d) Circuit does not exist open

Description : The potential difference in an open circuit is a) Zero b) Unity c) Infinity d) Circuit does not exist open

Last Answer : c) Infinity

Calculate the energy stored per unit volume in a dielectric medium due to polarisation when P = 9 units and E = 8 units. a) 1.77 b) 2.25 c) 36 d) 144

Description : Calculate the energy stored per unit volume in a dielectric medium due to polarisation when P = 9 units and E = 8 units. a) 1.77 b) 2.25 c) 36 d) 144

Last Answer : c) 36

Find the height of an infinitely long conductor from point P which is carrying current of 6.28A and field intensity is 0.5 units. a) 0.5 b) 2 c) 6.28 d) 1

Description : Find the height of an infinitely long conductor from point P which is carrying current of 6.28A and field intensity is 0.5 units. a) 0.5 b) 2 c) 6.28 d) 1

Last Answer : b) 2

Find the magnetic field when a circular conductor of very high radius is subjected to a current of 12A and the point P is at the centre of the conductor. a) 1 b) ∞ c) 0 d) -∞

Description : Find the magnetic field when a circular conductor of very high radius is subjected to a current of 12A and the point P is at the centre of the conductor. a) 1 b) ∞ c) 0 d) -∞

Last Answer : c) 0

Find the electric flux density surrounding a material with field intensity of 2xyz placed in transformer oil ( εr = 2.2) at the point P(1,2,3) is (in 10 -10 units) a) 2.1 b) 2.33 c) 2.5 d) 2.77

Description : Find the electric flux density surrounding a material with field intensity of 2xyz placed in transformer oil ( εr = 2.2) at the point P(1,2,3) is (in 10 -10 units) a) 2.1 b) 2.33 c) 2.5 d) 2.77

Last Answer : c) 2.5