Applications
This device converts electrical energy into mechanical energy using the interaction between current and a magnetic field.
What is an electric motor?
This part of the motor is one that experiences the motor effect in order to create torque.
What is an armature?
Calculated as (P = VI), this power formula determines the rate at which electrical energy is dissipated or transformed in a circuit component.
What is the Electrical Power Formula?
This concept is the measure of the total magnetic field that passes through a given surface area.
What is magnetic flux?
A straight current-carrying wire is placed in a magnetic field. If the current is doubled, the magnetic force on the wire does this.
What is the doubling of the force?
This device uses electromagnetic induction to convert mechanical energy into electrical energy.
What is a generator?
This part in a motor is what allows the DC currents to change polarity in the armature.
What is a split-ring commutator?
Expressed as (E = V/d), this equation calculates the strength of a uniform electric field created between two parallel metal plates.
What is the Electric Field Strength Formula?
This equation defines the force experienced on a charge moving perpendicularly in a magnetic field.
What is F = qvbsin(theta)?
An electron enters a uniform magnetic field at an angle of 90 degrees to the field. The magnetic force changes the direction of its velocity but does not change this quantity.
What is speed?
This type of transformer increases the voltage while decreasing the current, assuming an ideal transformer.
What is a step up transformer?
This part of a AC motor uses electromagnetic induction in order to create torque.
What is the squirrel cage?
This equation calculates the magnitude of the deflecting force experienced by a single charged particle moving through a magnetic field.
What is F = qvB(sintheta)?
This devious little trick is used to find the direction of a force on a positive charge.
What is the right-hand palm rule?
A coil rotating in a magnetic field produces an alternating EMF because the magnetic flux through the coil continuously does this.
What is changing sinusoidally/periodically?
This phenomenon allows magnetic fields to be used to separate charged particles according to their mass-to-charge ratio.
What is a mass spectrometer?
This part of a DC motor is curved and allows the motor to experience maximum torque at all times during its rotation.
What is a stator?
This equation quantifies the total amount of magnetic field passing through a given area.
What is Flux? phi = BAsintheta
This concept explains that an EMF is induced in a current carrying conductor whenever the magnetic flux through the circuit changes over time.
What is Faraday's Law or Electromagnetic Induction?
Two charged particles enter the same uniform magnetic field with the same momentum. The particle with the greater charge-to-mass ratio follows a _______ radius compared with the other particle.
What is smaller?
This technology uses changing magnetic fields to induce electrical currents in a nearby conductor without direct electrical contact.
What is wireless charging/inductive charging?
What is the axle?
This formula dictates the radius of a charged particle's circular path, it balances the centripetal force of uniform circular motion against the magnetic component of the Lorentz force.
What is r = mv/qB
This concept explains that the direction of an induced electrical current or voltage always opposes the change in magnetic flux that produced it.
What is Lenz law?
A conducting loop is pulled out of a magnetic field. Using Lenz's Law, determine the direction of the induced current when viewed from the side of the loop that is leaving the field.
The induced current produces a magnetic field that opposes the decrease in flux. Therefore, the loop's magnetic field attempts to maintain the original magnetic field through the loop.