The electrostaic potential of a charged body represents the degree of electrification of the body. It detemines the direction of flow of charge between two charged bodies placed in contact with eachother. Charege always flows a body at higher potential to another body at lower potential. The flow of charge stops as soon as the potentials of the two bodies become equal. Electrostatic potential in electrically corresponds to level in case fo liquids , pressure in case of gases and temperature in case of heat. Due to a point charge q in air, electrostatic potentials at a distance r from the charge is `V = (q)/(4pi in_(0) r)` The SI unit of potential is volt. Read the above passage and answer the follwing questions : (i) The capacity of a body A is 100 times the capacity of body B and charge on A is 10 times the charge on B. When A and B are put in contact with eachother, will charge flow from A to B to A ? Why ? (ii) Calcualte the potential in air at a point 1 meter away from charge of `1muC`. (iii) What values of life do yo+-earn from the concept of electric potential ?

The electrostaic potential of a charged body represents the degree of

1.	The electrostaic potential of a charged body represents the degree of electrification of the body. It detemines the direction of flow of charge between two charged bodies placed in contact with eachother. Charege always flows a body at higher potential to another body at lower potential. The flow of charge stops as soon as the potentials of the two bodies become equal. Electrostatic potential in electrically corresponds to level in case fo liquids , pressure in case of gases and temperature in case of heat. Due to a point charge q in air, electrostatic potentials at a distance r from the charge is `V = (q)/(4pi in_(0) r)` The SI unit of potential is volt. Read the above passage and answer the follwing questions : (i) The capacity of a body A is 100 times the capacity of body B and charge on A is 10 times the charge on B. When A and B are put in contact with eachother, will charge flow from A to B to A ? Why ? (ii) Calcualte the potential in air at a point 1 meter away from charge of `1muC`. (iii) What values of life do yo+-earn from the concept of electric potential ?
Answer» (i) `V_(A) = (q_(A))/(C_(A)) and V_(B) = (q_(B))/(C_(B)) :. (V_(B))/(V_(A)) = (q_(B))/(C_(B)) xx (C_(A))/(q_(A)) = (C_(A))/(C_(B)) xx (C_(A))/(q_(A)) = 100xx (1)/(10) = 10` `V_(B) gt V_(A)` `:.` Charge would flow from B to A, as potential of B is greater than potential of A. (ii) From `V = (q)/(4pi in_(0) r) = ((10^(-6))xx9xx10^(9))/(1) = 9xx10^(3)` volt. (iii) The concept of potential emphasises taht charges flows from a body at higher potential to a body at lower potential . In day to day life, knowledge flows from a person of higher learning level to the the person of lower learning level. If we happen to have some health problem, we must always seek the opinion of a super specialist in the field concerned. The knowledge and information the super specialist have is of much higher level. The line of treatment adopted by him is going to cure us. The quacks who might have more knowledge of a variety of other fields shall be of no use.

Discussion

No Comment Found

Related InterviewSolutions

Two spherical , noncoducting and very tin shells of unifromly distributed jpositive charge `Q` and radiuy d are located a distance ` 10d` from each other . A positive point charge q is placed inside one of the shells at a dustabce ` d//2` from the center, on the line connecting the centers of the two shells , as shown in the figure, What is the net force on the charge `q` ? . A. ` (qQ)/(3 61 pi varepsilon_0 d^2) ` to the leftB. `(qQ)/(36 1 pi varepsilon_0 pi d^2) ` to the rightC. ` ( 362qQ)/(36 1 pi varepsilon_0d^2)` to the leftD. `(36 0qQ)/(36 1 pi varepsilon_0d^2)` to the right
A hollow metal sphere of radius ` 5 cm` is charged such that the potential on its surcace is ` 10V`. The potential at the centre of the centre of the sphere is -A. ` 0 V`B. ` 10 V`C. same as at point ` 5 cm` away from the surface out side sphereD. same as a point ` 25` cm away from the surface
A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is `10V`. The potential at the distance `3 cm` from the centre of the sphere is:A. zeroB. 10 VC. same as at a point 5 cm away from the surfaceD. same as at a point 25 cm away from the surface
A hollow metal sphere of radius ` 5 cm` is charged such that the potential on its surface is ` 10V`. The potential at the center of the sphere is -
The electric field in the region between two concentric charged spherical shells- (a) is zero (b) increases with distance from centre (c) is constant (d) decreases with distance from centre
A hollow metallic sphere of radius 10 cm is given a charge of `3.2 xx 10^(-9) C.` The electric intensity at a point 4 cm from the center isA. `9xx10^(-9)NC^(-1)`B. `"288 NC"^(-1)`C. `"2.88 NC"^(-1)`D. zero
A hollow metal sphere of radius 10 cm is charged such that the potential on its surface is 80 V. The potential at the centre of the sphere is-(a) 800 V (b) zero (c) 8 V(d) 80 V
A hollow metal sphere of radius 10cm is charged such that the potential on its surface is 80 V. The potential at the centre of the sphere isA. zeroB. `80 V`C. `800 V`D. `8V`
The electric field strength in air at NTP is `3 xx 10^(6)V//m`. The maximum charge that can be given to a spherical conductor of radius 3m isA. `3xx 10^(4)C`B. `3 xx 10^(-3)C`C. `3 xx 10^(-2)C`D. `3 xx 10^(-1)C`
Two spherical conductors A and B of radii 1mm and 2mm are separated by a distance of 5 cm and are uniformly charged. If the spheres are connected by a conducting wire then in equilibrium condition, the ratio of the magnitude of the electric fields at the surfaces of spheres A and B isA. `4 :1`B. `1:2`C. `2:1`D. `1:4`

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment