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Select Lessons (39)
Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound
5/30 MCQs for:
Magnetism
The SI unit of magnetic field is the:
Weber.
Gauss.
Tesla.
Lorentz.
At a particular instant, an electron moves eastward at speed V in a uniform magnetic field that is directed straight downward. The magnetic force that acts on it is:
Directed to the South.
Zero.
Directed to the North.
Directed upward.
The direction of the force on a current-carrying wire in a magnetic field is described by which of the following?
Perpendicular to both the current and the magnetic field.
Perpendicular to neither the current or the magnetic field.
Perpendicular to the magnetic field only.
Perpendicular to the current only.
A charged particle moves and experiences no magnetic force. From this we can conclude that:
No magnetic field exists in that region of space.
The particle is moving parallel to the magnetic field.
Either no magnetic field exists or the particle is moving parallel to the field.
The particle is moving at right angles to the magnetic field.
The magnetic field produced by a long straight current-carrying wire is:
Inversely proportional to the current in the wire and proportional to the distance from the wire.
Inversely proportional to both the current in the wire and the distance from the wire.
Proportional to both the current in the wire and the distance from the wire.
Proportional to the current in the wire and inversely proportional to the distance from the wire.
