Magnetism and Electromagnetic Induction
A permanent magnet creates what kind of field around itself?
Radio Wave Field
Magnetic Field
Electrical Field
Gravitational Field
When a charged particle moves perpendicular to a uniform magnetic field, what path will it follow?
It will continue moving in a straight line.
It will accelerate along the direction of the field.
It will move in a circular path.
It will slow down and stop eventually.
Which unit is used to measure magnetic field strength?
Volt (V)
Joule (J)
Tesla (T)
Ampere (A)
What occurs in an AC circuit with an inductor as the frequency of alternating current increases?
The resistive reactance decreases.
The inductive reactance increases.
The capacitive reactance increases.
The overall resistance decreases.
What does the symbol 'B' represent in the equation ?
The electric field strength.
The force exerted on the charge.
The magnetic field strength.
The velocity of the charge.
A loop of wire carries current clockwise in a rectangular enclosure exposed to a uniform external magnetic source oriented north to south. What is the net torque about the center of the loop under these circumstances?
Clockwise because the north ends of the wire are pushed inwards while the south ends experiencing outward pull, creating rotational motion around the centroid axis.
Zero because torque is the product of force, lever arm, and all points on the wire experience equal magnitude opposite forces symmetrically distributed across the loop, resulting in no net torque overall.
Varying in time dependent on phase shift between current amplitude and external field dynamics, generating periodic torque surges.
Counterclockwise force on upper and lower segments induces torsion effect leading to inverse rotation compared to initial current flow.
What trajectory would an electron follow if injected into a region containing both electric and magnetic fields that are uniform, perpendicular to each other, but results in no net deflection?
Helical path rotating about E-field lines
Horizontal circular path centered around point of entry
Vertical spiral increasing radius away from point of entry
Straight line along initial injection path

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What experimental result led scientists to conclude that light can be influenced by magnetism (magneto-optic effect)?
Light bends around corners in presence of weak magnets without additional materials involved.
Light intensity increases when shone across heavy ferromagnetic materials without magnets applied.
Light polarization rotates when passed through certain materials under strong magnets.
Light waves lose energy when passing close to powerful magnets without interacting with any material.
Which statement is correct regarding an electrically neutral rod dropped vertically through a hoop connected to a generating electrical signs observed?
None detected
Positive top, Negative bottom
Changes slowly as speed decreases
Negative top, Positive bottom
Which feature would increase the magnitude of magnetic force experienced by a charged particle moving through a magnetic field?
Decreasing the velocity of the particle parallel to the field lines.
Changing only direction without changing any other factors affecting force magnitude or velocity vector characteristics relative to B-field orientation.
Increasing the charge of the particle.
Increasing the mass of the charged particle alone.