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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 magnetic field produced by a long straight current-carrying wire is:
Proportional to both the current in the wire and the distance from the wire.
Inversely proportional to both the current in the wire and the distance from the wire.
Inversely proportional to the current in the wire and proportional to the distance from the wire.
Proportional to the current in the wire and inversely proportional to the distance from the wire.
The SI unit of magnetic field is the:
Tesla.
Lorentz.
Gauss.
Weber.
Two long parallel wires placed side-by-side on a horizontal table carry identical current straight toward you. From your point of view, the magnetic field at the point exactly between the two wires.
Points up.
Is zero.
Points toward you.
Points down.
Two long parallel wires are placed side-by-side on a horizontal table. If the wires carry current in the same direction,
One wire is lifted slightly as the other wire is forced against the table's surface.
Both wires are lifted slightly.
The wires repel each other.
The wires attract each other.
An electron has an initial velocity to the south but is observed to curve upward as the result of a magnetic field. The direction of the magnetic field is:
Upward.
Downward.
To the East.
To the West.
