An electron is moving perpendicular to the magnetic field, which of the following is correct statement about electromagnetic force acting on the electron?
- Force acting is equal to electron charge
- Force acting is equal to the magnetic field strength
- Force acting is maximum
- Zero force is acting on it
Explanation
When an electron moves perpendicular to a magnetic field, the electromagnetic force (also known as the Lorentz force) acting on the electron is given by the formula:
F=qvBsin(θ)
Where:
- is the force,
- is the charge of the electron,
- is the velocity of the electron,
- is the magnetic field strength,
- is the angle between the velocity vector and the magnetic field.
When the electron is moving perpendicular to the magnetic field, and
Therefore, the force becomes:
This means the force is at its maximum value since both the charge and the velocity contribute to the force. Thus, the statement that the force acting is maximum is correct.
Related MCQs
اولی کلچرکس کا مطالعہ ہے جس سے نمٹا جاتا ہے۔
- Vegetable production
- Fruits production
- Wheat production
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
پھلوں کے مطالعہ کو کیا کہا جاتا ہے؟
- Sericulture
- Pomology
- Apiculture
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
مائکولوجی کا مطالعہ کیا ہے؟
- Insects
- Fungus (Fungi)
- Sound
- Minerals
اس سوال کو وضاحت کے ساتھ پڑھیں
فنجائی (پھپھوندی) کی خلیاتی دیوار کس چیز سے بنی ہوتی ہے؟
- Cellulose
- Chitin
- Peptidoglycan
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
نیوٹن کے حرکت کے پہلے قانون کو کس نام سے بھی جانا جاتا ہے؟
- Law of conservation of energy.
- Law of momentum.
- Law of inertia.
- Law of force.
اس سوال کو وضاحت کے ساتھ پڑھیں
