RAD Physics - Ch. 6: Electrostatics

Current

the number of electrons flowing per second

Conductor

wire

Circuit

path over which the current flows

Potential Difference

difference in potential energy between two points in a circuit

Resistance

the property of the circuit that opposes the flow of current

Series Circuit

circuit in which all components are connected to end

Parallel Circuit

circuit in which components are connected as branches off the main circuit

Capacitor

device for story energy

Power

electrical energy expended per second

In a circuit one end need to be _____ and the other end need to be _____

positive, negative

What is the unit of Potential Difference?

voltage

What is EMF?

Electromotive Force

- the maximum potential difference of the circuit

What is the unit of EMF?

Volt

As the electron is traveling around the circuit the potential difference _____.

Decreases

What is the unit of Current?

Ampere

What is the unit of Resistence?

Ohm

Conductance

the ability of a circuit to conduct current

What is the unit of Conductance?

Seimens

Dielectric

another term for non-conductor or insulator

As the length of the wire increases, the resistance ____

increases

As the cross sectional area of the wire increases, the resistance ____

decreases

As the temperature of the wire increases, the resistance _____

increases

What is the equation of Ohms Law?

V=IR

Voltmeter

measures voltage and has to be connected in parallel

Ammeter

measure current and has to be connected in series

When you add more light bulbs in a series circuit...

the voltage drops

What is the same everywhere in a series circuit?

the current

In a series circuit, failure of one component will cause...

the entire circuit to fail

What is the equation for Resistance of a Series Circuit?

R=r1+r2+r3...

As you add more resisters wired in parallel, the total current ______, total resistance ______, and voltage remain ______.

increases, decreases, the same

Home are wired in what kind of circuit?

parallel circuit

The branch having the lowest amount of resistance will have...

the greatest amount of current

Capacitance

the ability to store energy

As the size of metal plate increases, capacitance ______

increases

As the distance between the plate increases, capacitance ______

decreases

Wax paper and glass will do what to the capacitance?

increases

What is the equation for Power?

P=IV

What is the unit for Power?

watts

What is the equation for power loss in the form of heat?

P=I^2(R0