Physics - Module 6 Electromagnetism

Created by

Tara Golchin

Cards (130)

What is the formula for the electric field between parallel charged plates? 
$E =$ $\frac{V}{d}$
What does the formula $F_{\text{net}} =$ $ma$ represent in the context of electric fields? 
It represents the net force acting on a charged particle in an electric field.
How is the work done on a charge calculated in an electric field? 
$W =$ $qV$
How does the work done on a charge relate to its kinetic energy? 
The work done on a charge is equal to the change in its kinetic energy: $\Delta K =$ $W$ .
What is the relationship between electric force and electric field? 
Electric force $F =$ $qE$
Electric field $E =$ $\frac{F}{q}$
Electric force acts at a distance mediated by the electric field.
What is Coulomb's Law formula for the force between two-point charges? 
$F =$ $\frac{1}{4\pi\epsilon_0} \frac{q_1 q_2}{r^2}$
What does the permittivity of free space $\epsilon_0$ represent? 
It is a constant that describes how electric fields interact with the vacuum of space.
How is the electric field strength between parallel plates calculated? 
$E =$ $\frac{V}{d}$
What is electrical potential energy defined as? 
It is the potential energy of a charge due to its position in an electric field.
What does the work done by the electric field on a charge equal to? 
It equals the negative change in electrical potential energy: $W =$ $-\Delta U$ .
How does the direction of force and displacement affect work done by an electric field? 
Same direction results in positive work; opposite direction results in negative work.
What is the formula for potential difference (voltage)? 
$V =$ $\frac{W}{q}$
What does the charge-to-mass ratio describe? 
It describes how much charge a particle has per kilogram of mass.
What happens to a charged particle moving perpendicular to an electric field? 
It experiences no acceleration in the perpendicular direction.
What is the formula for the magnetic force on a moving charge? 
$F =$ $qv_{\perp}B =$ $qvB \sin \theta$
How is the direction of the magnetic force determined?
Using the Right-Hand Palm Rule.
What is the path of a charged particle moving perpendicular to a uniform magnetic field? 
It follows a circular path due to the magnetic force acting as centripetal force.
What is the formula for the radius of the path of a charged particle in a magnetic field? 
$r =$ $\frac{mv}{qB}$
What is the motor effect in the context of a current-carrying conductor in a magnetic field? 
It is the force produced on a conductor when it is placed in a magnetic field.
What conditions produce the maximum force on a current-carrying conductor in a magnetic field? 
When the conductor is perpendicular to the magnetic field.
What is the formula for the force between two parallel current-carrying wires? 
$F =$ $\frac{\mu_0}{2\pi} \frac{I_1 I_2}{r}$
What are the key concepts of electric fields and forces? 
Electric force acts at a distance.
Electric field mediates the electric force.
Work done on a charge changes its energy.
Electric potential energy is related to position in an electric field.
What are the characteristics of magnetic fields? 
Magnetic fields exist around magnets and moving charges.
The unit of magnetic field strength is the Tesla (T).
Magnetic field lines indicate direction and strength.
The Right-Hand Grip Rule determines the direction of the magnetic field.
What are the interactions between current-carrying conductors? 
Opposite currents repel.
Same currents attract.
Resultant magnetic field is a vector sum of individual fields.
What type of motion does a particle follow when it curves at a constant rate?
Uniform circular motion
What is the relationship between magnetic force and centripetal force for a charged particle? 
Magnetic force equals centripetal force
How can the radius of the path of a charged particle be calculated? 
$r =$ $\frac{mv}{qB}$
What is the inquiry question regarding the motor effect? 
Under what circumstances is a force produced on a current-carrying conductor in a magnetic field?
What is the formula for the force on a current-carrying conductor in a magnetic field? 
$F =$ $lIB\sin\theta$
What conditions produce the maximum force on a current-carrying conductor?
When the current is perpendicular to the magnetic field
What happens when no force is produced on a conductor in a magnetic field? 
The angle between the current and magnetic field is 0° or 180°
How can the interaction between two parallel current-carrying wires be quantitatively investigated? 
By using the formula $F/l =$ $\frac{\mu_0}{2\pi} \frac{I_1 I_2}{r}$
What does the formula $F/l =$ $\frac{\mu_0}{2\pi} \frac{I_1 I_2}{r}$ represent? 
The force per unit length between two parallel current-carrying wires
What is the value of the magnetic permeability of free space? 
$\mu_0 =$ $4\pi \times 10^{-7} \, Tm/A$
What does Newton's third law state regarding the forces between current-carrying conductors? 
The force between conductors with currents in the same direction is attractive
How was the ampere defined in 1954? 
The ampere is the constant current that produces a force of $2 \times 10^{-7} \, N/m$ between two parallel conductors 1 meter apart
What are the steps in a second-hand investigation of the force between parallel conductors? 
Plot the data on a graph and draw a line of best fit
Calculate the gradient
Express the gradient in terms of constants & control variables
Use information from steps 2 and 3 to find the unknown
What does plotting force versus current (F vs I) yield? 
A parabolic curve
What does plotting force versus distance (F vs d) yield? 
A hyperbola curve
What is torque defined as? 
The tendency of a force to rotate an object about an axis