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How does Flemings left hand rule help describe what will happen to the wire?
When a wire carrying an electric current is moved in a magnetic field of a magnet the magnetic field induced by the wire reacts with the magnetic field of the magnet causing the wire to move outwards. Fleming’s left hand rule helps you to predict the movement.
What 3 factors does Fleming’s left hand rule represent?
Fleming’s left hand rule
- The Thumb represents the direction of Thrust on the conductor (force on the conductor).
- The Fore finger represents the direction of the magnetic Field.
- The Center finger (middle finger) the direction of the Current.
What does Fleming’s left hand rule help you to work out?
Fleming’s left-hand rule is used to find the direction of the force acting on the current carrying conductor placed in a magnetic field.
What is Fleming’s left hand rule BBC Bitesize?
The force on a given length of wire in a magnetic field increases when: the current in the wire increases. the strength of the magnetic field increases.
What does Fleming’s LHR help us to predict?
Fleming’s right-hand rule (for generators) shows the direction of induced current when a conductor attached to a circuit moves in a magnetic field. It can be used to determine the direction of current in a generator’s windings.
What does thumb indicates according to Fleming left hand rule?
Thumb: The thumb is a representation of the direction of thrust on the conductor. Index Finger: Also known as the forefinger, this represents the direction of the magnetic field. Middle Finger: Also known as the center finger, is representative of the direction of the current.
What does thumb indicates according to Fleming left-hand rule?
According to Fleming’s left-hand rule, if we stretch the thumb, forefinger, and the middle finger of the left-hand perpendicular to each other, then the forefinger indicates the direction of the magnetic field, the middle finger denotes the direction of current and the thumb represents the direction of the force.
How Fleming’s left hand rule can be used to determine the direction in which the rod will move when the switch is closed and state the direction?
The Fleming’s left hand rule can be used to determine the direction of the force, magnetic field and current. A left hand can be held, so that the thumb, first finger and second finger are held mutually perpendicular to each other. The thumb represents the direction of Motion resulting from the force on the conductor.
In what situation do we use Fleming’s right-hand rule?
What is the difference between Fleming’s LHR and RHR?
Fleming’s left-hand rule gives the direction of magnetic force acting on a conductor whereas Fleming’s right-hand rule is used to find the direction of induced current.
What is the name of the effect caused by the wire when it is moved across a magnetic field?
electromagnetic induction
This process, by which a changing magnetic field around a conductor induces a current in it, is called electromagnetic induction.
On what factors does the direction of this force depend name and state the rule used for determination of direction of this force?
How does Flemings right-hand rule apply to AC generator?
Fleming’s right-hand rule (for generators) shows the direction of induced current when a conductor attached to a circuit moves in a magnetic field….
- The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field.
- The first finger is pointed in the direction of the magnetic field.
Which one of the following statements regarding Fleming’s rule is correct?
The correct answer is Fleming’s left-hand rule gives the direction of the force on a current-carrying conductor in a magnetic field. When a current-carrying conductor is placed in an external magnetic field, the conductor experiences a force perpendicular to both the field and to the direction of the current flow.
How does Fleming’s right hand rule apply to AC generators?
What happens to the deflection of the galvanometer needle due to moving the magnet when you increase the area of the coils?
You can show that when you increase the distance between the coils, the deflection of the galvanometer needle becomes smaller. When you reverse the direction of the current in the first coil, this reverses the direction of the change in magnetic flux that occurs when you press, and when you release, the tap switch.
What relationship can you make between the motion of the magnet and the current produced?
The greater the speed, the greater the magnitude of the current, and the current is zero when there is no motion. The current produced by moving the magnet upward is in the opposite direction as the current produced by moving the magnet downward.
What will happen to the direction of force acting in the wire if the current in the wire is reversed?
If the forefinger points in the direction of the magnetic field and the middle finger in the direction of the current, then, the thumb points in the direction of the force exerted on the conductor.So, if the current is reversed in the conductor placed in a magnetic field the direction of force is also reversed.
On what factors does the direction of force experienced by a conductor when placed in a magnetic field depends?
Force experienced by a current carrying conductor placed in a uniform magnetic field depends on the following factors: i) Magnetic field strength. ii) Current through the conductor. iii) Length of the conductor.
Are there any Fleming’s left hand rule questions for GCSE?
This is a set of Fleming’s Left Hand Rule questions, suitable for practice for GCSE/IGCSE or even A-level. There are 18 questions (over 8 pages) mostly of a simple application, to either identify force, current direction or magnet polarity. All questions are fill in answers on the sheet. Good practice for students.
How do I Revise GCSE homeostasis?
GCSE Homeostasis revision can be done effectively by learning the definitions presented on this page along with using the practice worksheets provided. From the human nervous system, to controlling body temperature and negative feedback, there is a lot to learn as part of the homeostasis and response topic.
What is Fleming’s right hand rule for electric motor?
Now applying Fleming’s right hand rule we get the current to be flowing and passing through CD and then AB. The same change in the direction takes place in case of electric motor. So can the motor be called AC Motor?
What do you know about the left hand rule?
The right side goes down, and the left side goes up. The right side goes up, and the left side goes down. The whole coil moves up. The whole coil moves down. Answer these quiz questions to find out what you know about the left hand rule and motor effect.