8 - Electrostatics, Circuit Elements, and Magnetism

Conductors vs Insulators

Conductors have abundance of electrons which make flow of current possible while insulators don’t have the abundance of free electrons

Electric field lines point in which direction?

Point in the direction a positive test charge would be pushed by the electric field.

Resistors

Restrict of limit the flow of electric current

Kirchhoff’s Junction Rule

The current flowing into a junction equals the current flowing out

Kirchhoff’s Loop Rule

The sum of the voltage increases and decrease around anysingle loop sum to zero

Capacitance

Ability of a system to store electric charge per unit of voltage

Voltmeter

Connected in parallel with the circuit; helps read voltage between two points

Ammeter

Connected in series with the circuit; reads current

Ohmmeter

Measure resistance

What is the right hand rule for a particle moving through a magnetic field?

Thumb = v (velocity)

Fingers = B (magnetic field)

Palm = Force

What is the right hand rule for a current-carrying wire in a magnetic field

Thumb = I (current)

Fingers = B (magnetic field)

Palm = Force

What is the right hand rule for a magnetic field due to a current-carrying wire?

Thumb = I

Fingers (curled) = B

If the magnetic field symbol is X, what does that mean?

The magnetic field points into the page

If the magnetic field symbol is •, what does that mean?

The magnetic field points out of the page