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When is the force experienced by a current-carrying conductor placed in a magnetic field largest? - Science

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प्रश्न

When is the force experienced by a current-carrying conductor placed in a magnetic field largest?

एका वाक्यात उत्तर

उत्तर १

According to Fleming's left hand rule, the force exerted on a current carrying conductor placed in a magnetic field is maximum when the conductor is placed perpendicular to the magnetic field. That is, the direction of the electric current and the direction of the magnetic field are perpendicular to each other.

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उत्तर २

When the direction of the current is perpendicular to the direction of the magnetic field, the force that a current-carrying conductor experiences in a magnetic field is greatest.

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पाठ 13: Magnetic Effects of Electric Current - Exercises [पृष्ठ २४१]

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एनसीईआरटी Science [English] Class 10
पाठ 13 Magnetic Effects of Electric Current
Exercises | Q 9 | पृष्ठ २४१

संबंधित प्रश्‍न

Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)


A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is ______.


State Fleming's left hand rule.


What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?


Name any two factors on which the strength of magnetic field produced by a current-carrying solenoid depends. How does it depend on these factors?


What happens when a current-carrying conductor is placed in a magnetic field?


In a statement of Fleming's left-hand rule, what do the following represent?

(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.


For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.


 Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field. 


State Fleming's left-hand rule. Explain it with the help of labelled diagrams.


A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in Figure below: 

The force on the wire due to the magnet is directed: 

fron N to S
 from S to N
 vertically downwards
 vertically upwards


 force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it. 


State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?


Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.


The following diagram shows two parallel straight conductors carrying the same current. Copy the diagram and draw the pattern of the magnetic field lines around them showing their directions. What is the magnitude of the magnetic field at a point 'X' which is equidistant from the conductors? Give justification for your answer.


State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.


The strength of magnetic field around a current-carrying conductor is ____________.


A magnetic field directed in north direction acts on an electron moving in east direction. The magnetic force on the electron will act ____________.


A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated.

In the example above, coil ABCD is horizontal and the battery is connected as shown.

  1. For this position, state the direction of the force on the arm AB.
  2. Why does the current in the arm BC not contribute to the turning force on the coil?

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