Magnetism and Electromagnetic Induction
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.
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.
A permanent magnet creates what kind of field around itself?
Radio Wave Field
Magnetic Field
Electrical Field
Gravitational Field
Which unit is used to measure magnetic field strength?
Volt (V)
Joule (J)
Tesla (T)
Ampere (A)
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
When a proton moves through a magnetic field at an angle that isn't perpendicular to the field lines, what type of path does it describe if the magnetic field remains constant?
An elliptical path.
A helical path.
A straight line path.
A parabolic path.
How will the force between two parallel currents change if one of the currents reverses direction while their magnitudes remain constant?
The force magnitude doubles but direction remains constant.
The force will change from attractive to repulsive or vice versa.
The force magnitude halves but maintains its original direction.
There will be no change in force magnitude or direction.

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Which tool would you use to measure the strength of an unknown magnetic field?
A voltmeter measuring potential difference across two points.
A barometer assessing ambient atmospheric pressure changes.
A gaussmeter equipped with Hall effect sensors.
An ammeter inserted into any nearby circuit.
In an ideal solenoid carrying a steady current, which conservation principle explains why the magnetic field strength inside remains uniform throughout its length?
Conservation of mass since there’s no loss or gain of material within the solenoid coils that would affect the field distribution within it
Conservation of linear momentum due to steady flow of electrons aligns their momentums consistently creating uniform fields inside.
Conservation of charge ensures steady current flow along solenoid loops.
Energy conservation as energy loss due to resistance is negligible in an ideal solenoid.
What happens to the magnitude of force felt by a current-carrying wire when placed in a uniform magnetic field if the current and length of wire are doubled while keeping everything else constant?
It remains constant.
It quadruples.
It doubles.
It increases by √2 times.