Fleming's Left Hand Rule

Q.

An electron beam enters a magnetic field at right angles to it as shown in the figure.

The direction of force acting on the electron beam will be :

(a) to the left (b) to the right (c) into the page (d) out of the page

Q.

What are dipole-induced dipole forces?

Q.

How do you use the right-hand rule for cross-product?

Q.

In Fleming’s left hand rule, the middle finger represents the direction of magnetic field.

1. True

2. False

Q.

Why change in magnetic flux produces a current?

Q. Linear motion of the piston in a heat engine is converted into rotary motion by ___ .

Q.

A uniform magnetic field exists in the plane of the paper pointing from left to right as shown in the figure. In the field, an electron and a proton move as shown. The electron and the proton experience:

1. Forces both pointing into the plane of paper

2. Forces both pointing out of the plane of paper

3. Forces pointing into the plane of paper and out of the plane of paper for proton and electron respectively

4. Forces pointing opposite and along the direction of the uniform magnetic field on proton and electron respectively

Q. What is Right-Hand Rule? Explain it with diagram

Q. Question 26
With the help of a labelled circuit diagram illustrate the pattern of field lines of the magnetic field around a current carrying straight long conducting wire. How is the right hand thumb rule useful to find direction of magnetic field associated with a current carrying conductor?

Q. Fleming's right hand rule is used to find the direction of

1. Magnetic force
2. Magnetic field
3. Induced current
4. Induced emf

Q.

In Fleming's left-hand rule, the thumb indicates the direction of ___.

1. magnetic field

2. current

3. motion

4. force

Q. 23.If B1; B2; and B3 are the magnetic field due to I1; I2; and I3; then in amperes circuital law B is

Q.

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

Q. What is the major difference between Fleming’s right hand rule and left hand rule?
the right hand rule is for positive charge then is the left hand rule applicable for negative charge??

Q. A uniform magnetic field is directed vertically upwards. In which direction in this field should an alpha particle be projected so that it is deflected southward ? Name and state the rule you have used to find the direction in this case .

Q.

A uniform magnetic field exists in the plane of paper pointing from left to right as shown in the figure given below. In the field, an electron and a proton move as shown. The direction of force experienced by the proton and the electron are:

1. Forces both pointing into the plane of paper

2. Forces both pointing out of the plane of paper

3. Forces pointing into the plane of paper and out of the plane of paper for proton and electron respectively

4. Forces pointing opposite and along the direction of the uniform magnetic field on proton and electron respectively

Q. An electron beam is moving vertically upwards. If it passes through a magnetic field which is directed from South to north in a horizontal plane, then in which direction will the beam deflect?

Q. Question 15 (b)
State the rule to determine the direction of a
(ii) force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.

Q.

State Fleming's left hand rule.

Q.

An electron enters a magnetic field at right angles to it, as shown in figure. The direction of force acting on the electron will

1. out of the screen

2. to the left

3. into the screen

4. to the right

Q.

How a charge in acceleration produces a magnetic field

Q.

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

Q. A proton projected towards east is deflected towards south by a magnetic field. The direction of the magnetic field is

1. Towards north
2. Upward
3. Towards south
4. Downward

Q. An alpha particle enters into a uniform magnetic field as shown in the figure below. The alpha particle will Alpha particle Magnetic field into the page X X X X X X X X X X X X X X X X (1) not deflect when it enters into the magnetic field. (2) deflects out of the page opposite to the direction of magnetic field. (3) deflects towards top of the page as it enters into the magnetic field. (4) deflects towards bottom of the page as it enters into the magnetic field.

Q. Please elaborate and explain me clearly based on the below statement:

"If there is a circular coil having n turns, the field produced is n times as large as that produced by a single turn. This is because the current in each circular turn has the same direction, and the field due to each turn then just adds up"

Q.

State the factors on which the force experienced by a current carrying conductor placed in a uniform magnetic field depends upon.

Q. 23. if beam of electron is moving directly toward observer facing east , where magnetic field act from south to north , then electro will deflected toward a.east b.west c.upward d.downward

Q.

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

1. get deflected in a vertically upward direction

2. get deflected in the opposite direction

3. move in a circular path with anti-clockwise direction

4. move in a circular path with clockwise direction

Q. A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will_______.

1. get deflected in vertically upward direction.
2. get deflected in opposite direction.
3. get deflected in downward direction only.
4. move in a circular path.

Q. Why do electrons move in specified direction?