Why is the earth's potential zero ?

Why is the earth's potential zero ?
by

1 Answer

Answer :

The earth is so large that its charge does not change if some charge is exchanged or given. So the earth 's potential is considered to be zero
by

Related questions

The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Description : The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Last Answer : (4) Zero Explanation: Work done by the string of the simple pendulum during one complete oscillation is zero. Tension in the string exactly cancels the component parallel to the string. This leaves a net restoring force back toward the equilibrium position as equal to zero.

Gravitational potential is always A. infinite B. zero C. positive D. negative

Description : Gravitational potential is always A. infinite B. zero C. positive D. negative

Last Answer : negative

As long as op-amp is not saturated, the potential difference between inverting and non-inverting inputs is A. zero B. infinite C. 1 D. 2

Description : As long as op-amp is not saturated, the potential difference between inverting and non-inverting inputs is A. zero B. infinite C. 1 D. 2

Last Answer : zero

If the capacitors are connected in parallel, then the potential difference across each capacitor is A. same B. different C. zero D. infinite

Description : If the capacitors are connected in parallel, then the potential difference across each capacitor is A. same B. different C. zero D. infinite

Last Answer : same

If charge is placed at infinity, it's potential is A. zero B. infinite C. 1 D. -1

Description : If charge is placed at infinity, it's potential is A. zero B. infinite C. 1 D. -1

Last Answer : zero

Gravitational potential is always A. positive B. negative C. zero D. infinity

Description : Gravitational potential is always A. positive B. negative C. zero D. infinity

Last Answer : negative

Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Description : Ten coulombs of charge are placed on a solid copper sphere. Once the charge has come to rest, the ELECTRIC POTENTIAL inside the sphere is found to be: w) zero x) uniform inside the sphere and ... the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared

Last Answer : ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC POTENTIAL ON THE SURFACE OF THE SPHERE 

A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Last Answer : ANSWER: W -- CONSTANT

Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform inside the sphere and equal to the electric potential on the surface of the sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

Description : Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential inside the hollow conducting shell is found to be: w) zero x) uniform ... sphere y) smaller than the electric potential outside the sphere z) varying as one over r squared.

Last Answer : ANSWER: X -- UNIFORM INSIDE THE SPHERE AND EQUAL TO THE ELECTRIC OTENT

The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Description : The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Last Answer : Zero

The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as a.Principle of conservation of mechanical energy b.Law of gravitation c.Newton's law d.Principle of conservation of momentum e.Law of nature

Description : The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as a.Principle of conservation of mechanical energy b.Law of gravitation c.Newton's law d.Principle of conservation of momentum e.Law of nature

Last Answer : a. Principle of conservation of mechanical energy

Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of bodies near the earth's equator (due to rotation of earth) is more than the velocities of particles at the pole c.107 dynes d.A cyclist should move along a zig-zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk

Description : Which of the following statement is false? a.The potential energy of a particle has the form Ep = k2x. The force acting on the particle is constant (k is a constant) b.The linear velocity of ... zag path while ascending a steep hill e.The density of milk decreases when cream is taken out of milk

Last Answer : e. The density of milk decreases when cream is taken out of milk

The energy that stored in a system as a result of its position in the earth’s gravitational field  a. elastic energy  b. kinetic energy  c. potential energy  d. flow energy

Description : The energy that stored in a system as a result of its position in the earth’s gravitational field  a. elastic energy  b. kinetic energy  c. potential energy  d. flow energy

Last Answer : potential energy

In analysis of man-environment relationship Pragmatic Possibilism implies that : (A) There is no limit for man to exploit resources of earth (B) There are limited possibilities to explore earth's resources (C) The man has to watch and assess the situation and then go ahead with resource utilization (D) The man has to keep in mind only his basic needs while planning to harness the potential of resourceful earth

Description : In analysis of man-environment relationship Pragmatic Possibilism implies that : (A) There is no limit for man to exploit resources of earth (B) There are limited possibilities to explore earth's ... to keep in mind only his basic needs while planning to harness the potential of resourceful earth 

Last Answer : (C) The man has to watch and assess the situation and then go ahead with resource utilization

What is the value of g above the earth's surface zero ?

Description : What is the value of g above the earth's surface zero ?

Last Answer : The value of g will be zero at infinite distances from the earth's surface . We know that g = (GM) / R² [G = gravitational constant , M = mass of the Earth] Here , no matter ... and gravitational ball scales are considered infinite. Source: Advanced Physics , Chapter 4 , Newtonian Mechanics.

Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at (A) High vacuum (B) Zero pressure (C) 0°K (D) Earth's centre

Description : Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at (A) High vacuum (B) Zero pressure (C) 0°K (D) Earth's centre

Last Answer : (B) Zero pressure

Pick up the correct statement from the following: (A) The tides at any place occur a little less than 1 hour later, each succeeding day (B) The influence of the earth's gravity alone produces level-tidal less sea (C) The spinning force is maximum at the equator and zero at the poles (D) All of the above

Description : Pick up the correct statement from the following: (A) The tides at any place occur a little less than 1 hour later, each succeeding day (B) The influence of the earth's gravity alone produces level-tidal ... ) The spinning force is maximum at the equator and zero at the poles (D) All of the above

Last Answer : (D) All of the above

For a missile launched with a velocity less than the earth’s escape velocity, the total energy is (1) either positive of negative (2) Negative (3) Zero (4) Positive

Description : For a missile launched with a velocity less than the earth’s escape velocity, the total energy is (1) either positive of negative (2) Negative (3) Zero (4) Positive

Last Answer : Negative

$ Water potential of distilled water is zero. ! `C_(2)` cycle is also called Kelvin cycle.

Description : $ Water potential of distilled water is zero. ! `C_(2)` cycle is also called Kelvin cycle.

Last Answer : $ Water potential of distilled water is zero. ! `C_(2)` cycle is also called Kelvin cycle. A. If both As ... R is wrong D. If both As and R are wrong.

The potential difference across a `2 H` inductor as a function of time is shown in figure. At time `t=0`, current is zero Current `t = 2` second is

Description : The potential difference across a `2 H` inductor as a function of time is shown in figure. At time `t=0`, current is zero Current `t = 2` second is

Last Answer : The potential difference across a `2 H` inductor as a function of time is shown in figure. At time `t=0`, current is ... B. `3 A` C. `4 A` D. `5 A`

Water potential in leaf tissue is “positive” (near zero) during: (a) Low transpiration (b) Excessive absorption (c) Excessive transpiration (d) Gestation

Description : Water potential in leaf tissue is “positive” (near zero) during: (a) Low transpiration (b) Excessive absorption (c) Excessive transpiration (d) Gestation

Last Answer : Ans. ((d))

When earth fault occurs: a) voltage potential at the earth mat increases due to grounding b) voltage potential at the earth mat decreases due to grounding c) voltage potential at the earth mat remains zero irrespective of fault d) none of the above

Description : When earth fault occurs: a) voltage potential at the earth mat increases due to grounding b) voltage potential at the earth mat decreases due to grounding c) voltage potential at the earth mat remains zero irrespective of fault d) none of the above

Last Answer : Ans: A

In energy method for finding frequency of the system A The sum of kinetic and potential energy is constant B The sum of kinetic and potential energy is zero C Frequency cannot be determined by energy method D None of the mentioned

Description : In energy method for finding frequency of the system A The sum of kinetic and potential energy is constant B The sum of kinetic and potential energy is zero C Frequency cannot be determined by energy method D None of the mentioned

Last Answer : A The sum of kinetic and potential energy is constant

As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. A. zero B. minimum C. maximum D. constant

Description : As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. A. zero B. minimum C. maximum D. constant

Last Answer : D. constant

As per Energy Method, the summation of kinetic energy and potential energy must D be ________ which is same at all the times. ( A ) zero ( B ) minimum ( C ) maximum ( D ) constant

Description : As per Energy Method, the summation of kinetic energy and potential energy must D be ________ which is same at all the times. ( A ) zero ( B ) minimum ( C ) maximum ( D ) constant

Last Answer : ( D ) constant

As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. (A) zero (B) minimum (C) maximum (D) constant

Description : As per Energy Method, the summation of kinetic energy and potential energy must be ________ which is same at all the times. (A) zero (B) minimum (C) maximum (D) constant

Last Answer : (D) constant

The resting membrane potential of a cell a. is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+ b. falls to zero immediately when Na+, K+ ATPase in the membrane is inhibited c. is usually equal to the equilibrium potential for K+ d. is usually equal to the equilibrium potential for Na+ e. is markedly altered if the extracellular Na+ concentration is increased

Description : The resting membrane potential of a cell a. is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+ b. falls to zero immediately when Na+ ... the equilibrium potential for Na+ e. is markedly altered if the extracellular Na+ concentration is increased

Last Answer : is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+

When a material has zero permittivity, the maximum potential that it can possess is a) ∞ b) -∞ c) Unity d) Zero

Description : When a material has zero permittivity, the maximum potential that it can possess is a) ∞ b) -∞ c) Unity d) Zero

Last Answer : d) Zero

If Laplace equation satisfies, then which of the following statements will be true? a) Potential will be zero b) Current will be infinite c) Resistance will be infinite d) Voltage will be same

Description : If Laplace equation satisfies, then which of the following statements will be true? a) Potential will be zero b) Current will be infinite c) Resistance will be infinite d) Voltage will be same

Last Answer : b) Current will be infinite

The potential taken between two points across a resistor will be a) Positive b) Negative c) Zero d) Infinity

Description : The potential taken between two points across a resistor will be a) Positive b) Negative c) Zero d) Infinity

Last Answer : b) Negative

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

When a cell is fully turgid, which of the following will be zero? (a) Turgor pressure (b) Water potential (c) Wall pressure (d) Osmotic pressure

Description : When a cell is fully turgid, which of the following will be zero? (a) Turgor pressure (b) Water potential (c) Wall pressure (d) Osmotic pressure

Last Answer : (b) Water potential

The water potential and osmotic potential of pure water are (a) 100 and 200 (b) zero and 100 (c) 100 and zero (d) zero and zero.

Description : The water potential and osmotic potential of pure water are (a) 100 and 200 (b) zero and 100 (c) 100 and zero (d) zero and zero.

Last Answer : (d) zero and zero.

The water potential of pure water is (a) less than zero (b) more than zero but less than one (c) more than one (d) zero.

Description : The water potential of pure water is (a) less than zero (b) more than zero but less than one (c) more than one (d) zero.

Last Answer : (d) zero.

The continuity equation in ideal fluid flow states that (A) Net rate of inflow into any small volume must be zero (B) Energy is not constant along a streamline (C) Energy is constant along a streamline (D) There exists a velocity potential

Description : The continuity equation in ideal fluid flow states that (A) Net rate of inflow into any small volume must be zero (B) Energy is not constant along a streamline (C) Energy is constant along a streamline (D) There exists a velocity potential

Last Answer : (A) Net rate of inflow into any small volume must be zero

When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is (A) Same in both the phases (B) Zero in both the phases (C) More in vapour phase (D) More in liquid phase

Description : When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is (A) Same in both the phases (B) Zero in both the phases (C) More in vapour phase (D) More in liquid phase

Last Answer : (A) Same in both the phases

At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is (A) Zero (B) One (C) Infinity (D) Negative

Description : At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is (A) Zero (B) One (C) Infinity (D) Negative

Last Answer : (B) One

Terminal potential difference of a battery is greater than its emf when a. the internal resistance of battery is infinite b. the internal resistance of battery is zero c. the battery is charged d. the battery is discharged

Description : Terminal potential difference of a battery is greater than its emf when a. the internal resistance of battery is infinite b. the internal resistance of battery is zero c. the battery is charged d. the battery is discharged

Last Answer : c. the battery is charged

In the following figure, the terminal potential is a. zero b. 2V c. 12V d. 36V

Description : In the following figure, the terminal potential is a. zero b. 2V c. 12V d. 36V

Last Answer : a. zero

Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Description : Avalanche breakdown in a diode occurs when a. Potential barrier is reduced to zero. b. Forward current exceeds certain value. c. Reverse bias exceeds a certain value. d. None of these

Last Answer : c. Reverse bias exceeds a certain value.

The water potential of pure water is : (1) Less than zero (2) More than zero but less than one (3) More than one (4) Zero

Description : The water potential of pure water is : (1) Less than zero (2) More than zero but less than one (3) More than one (4) Zero

Last Answer : (4) Zero

In practice, Earth is chosen as a place of zero electric potential because it

Description : In practice, Earth is chosen as a place of zero electric potential because it 

Last Answer : In practice, Earth is chosen as a place of zero electric potential because it has almost constant potential

Is electric potential zero when electric field is zero?

Description : Is electric potential zero when electric field is zero?

Last Answer : Yes  .If  electric  field  is  zero  then  electric  potential  is  zero  ,  not  even  one.

What is the atmospheric pressure on the earth's surface ?

Description : What is the atmospheric pressure on the earth's surface ?

Last Answer : Atmospheric pressure on the Earth's surface is about `10 ^ 5N` per square meter

Which of the following is false? (1) Most carbon compounds are poor conductors of electricity. (2) The force of attraction between carbon molecules is not very strong. (3) The atomic number of carbon is 6. (4) The earth’s crust has about 2% carbon in the form of minerals.

Description : Which of the following is false? (1) Most carbon compounds are poor conductors of electricity. (2) The force of attraction between carbon molecules is not very strong. (3) The atomic number of carbon is 6. (4) The earth’s crust has about 2% carbon in the form of minerals.

Last Answer : (4) The earth’s crust has about 2% carbon in the form of minerals.

Magnetic keepers are used to protect magnets from : (1) Earth's magnetic field (2) effect of other magnets (3) self-demagnetization (4) demagnetization due to heating

Description : Magnetic keepers are used to protect magnets from : (1) Earth's magnetic field (2) effect of other magnets (3) self-demagnetization (4) demagnetization due to heating

Last Answer : (3) self-demagnetization Explanation: Magnets have a tendency to lose their magnetism when their poles are left bare. This is called selfdemagnetization. Magnets are, therefore, protected by keeping them in magnetic keepers.

Major portion of the earth’s crust is mainly constituted by - (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Description : Major portion of the earth’s crust is mainly constituted by - (1) Oxygen and Iron (2) Oxygen and Silicon (3) Silicon and Iron (4) Silicon and Aluminium

Last Answer : (2) Oxygen and Silicon Explanation: Oxygen is the most abundant element in the earth’s crust, comprising 46.6% or the crust by weight. Silicon 28%, aluminum 8.2%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium, 2.0%, and titanium 0.61% also comprise the crust.

The south pole of the earth’s magnet is near the geographical ________. (1) south (2) east (3) west (4) north

Description : The south pole of the earth’s magnet is near the geographical ________. (1) south (2) east (3) west (4) north

Last Answer : (4) north Explanation: The South Pole of the Earth's magnet is in the geographical North because it attracts the North Pole of the suspended magnet and vice versa. Thus, there is a magnetic S-pole near the geographical North, and a magnetic Npole near the geographical South

If a body weighs 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface? (1) 12N (2) 2N (3) 10N (4) 6N

Description : If a body weighs 12N on the surface of the earth, how much will it weigh on the surface of the moon where acceleration due to gravity is only one-sixth of that on earth's surface? (1) 12N (2) 2N (3) 10N (4) 6N

Last Answer : (2) 2N Explanation: Weight is mass x g. Since mass is constant and g is only 16thof that on the earth. The weight on the moon is only 16th of that on the earth.

In the absence of the earth's atmosphere, sky would appear – (1) blue (2) deep red (3) white (4) black

Description : In the absence of the earth's atmosphere, sky would appear – (1) blue (2) deep red (3) white (4) black

Last Answer : (4) black Explanation: Sky appears blue because the tiny particles of the earth's atmosphere scatter the blue colour (short wavelength) of the sunlight more dominantly than other wavelengths. A blue ... in the absence of earth's atmosphere because there would be no particles to scatter the light.