A field of force can exist only between?

1 Answer

Answer :

A field of force can exist only between two ions.

Related questions

Description : Why do people use the word force, when what they are talking about is not force?

Last Answer : You can, of course, be forced into something through threat of sanction, no shooty bang bang there.

Description : In the End of "Return of The Jedi" why didn't "Princess Leia" see the same force impressions of Yoda, Obi-wan, and Anakin, as Luke did?

Last Answer : It’s a guy thing…

Description : What does applying a Force do? 

Last Answer : Force causes acceleration Newton's Second Law states that: the acceleration (a) of an object is directly proportional to the force (F) applied, and inversely proportional the object's mass (m). ... object, the greater the acceleration. And, the more mass the object has, the lower the acceleration.

Description : What is Force?

Last Answer : We define Force as: 1) Force is a push or pull. 2) Force is the capacity to do work or cause physical change. 3) Force= Mass times acceleration (F = ma) 4) A force is that ... force acting on an object. 10 Newtons, downwards is a complete description of the force acting upon an object.

Description : State principle of transmissibility of force.

Last Answer : Principle of Transmissibility of Force: It states that if a force acts at a point on a rigid body, it is assumed to act at any other point on the line of action of force within the same body. 

Description : Define force and state its effects.

Last Answer : Force: It is an external agency either push or pull which changes or tends to change the state of rest or of uniform motion of a body, upon which it acts. Effects of force : i) It may change the state ... It may turn or rotate the body on which it acts. iv) It may deform the body on which it acts.

Description : State characteristics of force.

Last Answer : i) Magnitude: The quantity of force e.g. 10 N, 100 kN etc.  ii) Direction: It is the line along which the force acts. It is also called as line of action of the force.  iii) Point of ... .  Push: If the arrow head is pointed towards the point of application, the nature of the force is push.

Description : Magnetomotive force formula

Last Answer : Magnetomotive force formula

Description : Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

Last Answer : Magnetic Lines of force- These are the imaginary lines (having no physical existence) introduced by Faraday for the pictorial representation of the distribution of a magnetic field.  OR  A line of ... that the tangent at any point gives direction of the resultant force at that point. 

Description : Define magnetic lines of force. Show the magnetic lines of force for bar type magnet.

Last Answer : Magnetic linens of force is the imaginary lines for magnetic field of magnet around it. These magnetic lines of forces are introduced by Michael Faraday. The direction of lines of force is from N-pole to S-pole. The figure shows lines of force for bar type magnet.

Description : Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative surface? A) Tube of surface B) Tube of lines C) Tube of force D) Tube of electricity

Last Answer : Which of the following is the name given to the lines of electric force which move so that its beginning traces a closed curve on a positive surface and its end traces a corresponding closed curve on the negative ... A) Tube of surface B) Tube of lines C) Tube of force D) Tube of electricity

Description : A single force and a couple acting in the same plane upon a rigid body?

Last Answer : A single force and a couple acting in the same plane upon a rigid body cannot balance each other.

Description : Limiting force of friction is the?

Last Answer : Limiting force of friction is the friction force acting when the body is just about to move.

Description : Frictional force encountered after commencement of motion is called?

Last Answer : Frictional force encountered after commencement of motion is called dynamic friction.

Description : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be?

Last Answer : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be zero at its upper end.

Description : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be?

Last Answer : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be upwards at its upper end.

Description : The product of either force of couple with the arm of the couple is called?

Last Answer : The product of either force of couple with the arm of the couple is called moment of the couple.

Description : A force is completely defined when we specify?

Last Answer : A force is completely defined when we specify magnitude, direction, point of application.

Description : A force acting on a body may?

Last Answer : A force acting on a body may introduce internal stresses, balance the other forces acting on it, retard its motion, change its motion.

Description : The unit of force in S.I. units is

Last Answer : The unit of force in S.I. units is Newton.

Description : How to Kick a Football Field Goal

Last Answer : How to Kick a Football Field Goal There are only a few seconds left in the game, and one field goal attempt is all that stands between you and gridiron glory, or a place in the Hall of Shame. ... right kick for the right play, and get that game-winning field goal just right between the goal posts.

Description : How to Plow a Field

Last Answer : How to Plow a Field Civilization began when human beings started to turn over the soil to plant food. Plowing may have come a long way since the first human beings used their hands and ... budget. With these tools, you can plow fields and help contribute to the advancement of human civilization.

Description : How to Field Dress a Deer ?

Last Answer : How to Field Dress a Deer If you enjoy hunting deer, there's one important task you need to do before you can haul your prized catch back home: you'll need to field dress it. Field dressing ... you go hunting. Just follow these steps and you'll bring your prized catch home without any trouble.

Description : State advantages of rotating field type alternators. 

Last Answer : Advantages of Rotating Field Type Alternator: 1) For high-voltage alternator, large space is required to accommodate conductors with insulation, as high voltage is induced in them. If field poles are placed ... is kept rotating. 8) Rotating field is comparatively light and can run with high speed. 

Description : A magnetic circuit has effective iron length of 100 cm and it is wound with 800 turns of wire carries 1 A. Find the magnetic field strength.

Last Answer : magnetic field strength

Description :  Field intensity formula

Last Answer :  Field intensity formula

Description : Energy stored in electrostatic field of capacitance formula

Last Answer : Energy stored in electrostatic field of capacitance formula

Description : What arc the errors occurring in measuring devices due to stray magnetic field and temp '? Explain how to compensate them.

Last Answer : 1. Error due to stray magnetic fields-   Main magnetic field gets disturbed by external magnetic fields known as stray magnetic fields.  2. Compensation technique   To avoid this error, ... resistance alloy having a negligible resistance temp coefficient in the ratio of 1:10 for pressure coil 

Description : Define junction field effect transistor (JFET) and give an example.

Last Answer : Junction Field-Effect Transistor: It is a semiconductor device having three terminals, namely Gate, Drain and Source, in which the current flow is controlled by an electric field set up by an external voltage applied ... : i) n-channel JFET and ii) p-channel JFET Examples of JFET: BFW 10, BFW 11 

Description : Derive an expression for energy stored in a magnetic field . 

Last Answer : Expression for energy stored in a magnetic field: The energy is stored in magnetic field when current increases and return back when the current decreases. At instant t' seconds after closer of switch ... energy absorbed by the magnetic field when current increases from 0 to I amperes 

Description : Define magnetic field strength and state its unit.

Last Answer : Magnetic field strength is the force experienced by a unit N-pole when placed at any point in a magnetic field is known as magnetic field strength or magnetizing force. Magnetising force or magnetic field ... unit of length is metre. So the unit of magnetic field strength is ampere turns per metre.

Description : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as  (1) synchronous motor (2) synchronous generator (3) asynchronous motor (4) asynchronous generator

Last Answer : In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as synchronous generator 

Description : The ability of materials to become polarized under an applied electric field is called _______ A) Ferroelectricity B) Paraelectricity C) Polectricity D) None of these

Last Answer : The ability of materials to become polarized under an applied electric field is called Paraelectricity

Description : Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity of the electric current? A) Lenz’s law B) Faraday’s law C) Biot–Savart law D) None of these

Last Answer : Which of the following laws relates the magnetic field to the magnitude, direction, length, and proximity of the electric current? A) Lenz’s law B) Faraday’s law C) Biot–Savart law D) None of these

Description : The electric field inside a hollow conducting sphere ________ A) Depends on the diameter of the sphere  B) Varies according to the direction of earth’s magnetic poles C) Is zero  D) None of these

Last Answer : The electric field inside a hollow conducting sphere Is zero

Description : Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.

Last Answer : Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.

Description : It is possible to increase the field flux and, at the same time, increase the speed of a d.c. motor provided its .......... is held constant.

Last Answer : It is possible to increase the field flux and, at the same time, increase the speed of a d.c. motor provided its armature current is held constant.

Last Answer : To avoid the effect of stray magnetic field in A.C. bridges we can use magnetic screening.

Description : A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave?

Last Answer : A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will be of 5 Hz.

Last Answer : Flashing the field of D.C. generator means creating residual magnetism by a D.C. source.

Last Answer : If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens this will make armature to take heavy current, possibly burning it.

Last Answer : If the field of a D.C. shunt motor gets opened while motor is running the motor will attain dangerously high speed.

Last Answer : In a shaded pole single-phase motor, the revolving field is produced by the use of shading coils.

Last Answer : If the field winding of an unloaded salient pole synchronous motor is open circuited, the motor will stop.

Description : MOSFET uses the electric field of?

Last Answer : MOSFET uses the electric field of gate capacitance.

Description : An electric motor in which both stator field and rotor rotates with same speed is called?

Last Answer : An electric motor in which both stator field and rotor rotates with same speed is called synchronous motor.

Description : If the field of synchronous motor is under excited, power factor will be?

Last Answer : If the field of synchronous motor is under excited, power factor will be lagging.

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.