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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
A horizontal wire carries a current straight toward you. From your point of view, the magnetic field caused by this current:
Points directly away from you.
Circles the wire in a counter-clockwise direction.
Circles the wire in a clockwise direction.
Points to the left.
Two long parallel wires carry equal currents. The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the magnitude of the new force between the two wires?
2F.
F/4.
F/2.
4F.
A charged particle moves with a constant speed through a region where a uniform magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on this particle will be maximum when the particle moves:
In a plane parallel to the Earth's surface.
Upward at an angle of 45e above the horizontal.
Straight downward.
Straight upward.
Two long parallel wires are placed side-by-side on a horizontal table. If the wires carry current in the same direction,
Both wires are lifted slightly.
The wires attract each other.
The wires repel each other.
One wire is lifted slightly as the other wire is forced against the table's surface.
1 T is equivalent to:
Vm/A.
1 Nm/A.
N/Am.
1 NA/m.
