Currents
Famous rock band name inspired by alternating and direct current
What is AC/DC
Circuits are made up of three components:
What is: conductor, power source, wires (conduct electricity)
Formula for Ohm's law
What is: V= I/R
Electromagnets are made up of three components:
What is iron core (metal), electric current (battery), wire (passes current)
Objects that conduct electricity easily
What is a conductor
What is Direct Current?
In this circuit the amount of current remains the same throughout
What is a series circuit?
A small light bulb is connected to a 6 V battery and draws 2 A of current. What is the net resistance of the bulb?
What is R=3 Ω
Magnets can be either be temporary or ( ), electromagnets are considered ( ) because ( )
What is: permanent, electromagnets are temporary since we can destroy their magnetic field
Gertrude goes down a plastic slide in the summer time, she's surprised that the slide isn't hot. That is because the slide is a great...
What is an insulator?
In this current, electrons flow in alternating directions
What is alternating current?
This circuit has a longer battery life because it has less resistance
What is series circuit?
Determine the amount of current going through a 50 Ω; resistor with a voltage of 120 V.
What Is: I = 2.4 A
Electromagnets can become stronger through these two methods
What is: Adding coils and adding current
In an automobile, a 12 Volt battery simultaneously supplies electrical energy for the ignition, lights and radio. Name the type of circuit this represents and the type of current that powers it
What is: DC current in parallel circuit
This structure helps supply current to homes
What is a power plant?
This circuit - has multiple paths, and will still work when one branch is opened
What is parallel circuit?
Ohm's Law measures these three things - often represented in a triangle. Name these three things and their units
What is: Electric Current (I) measured in amps, voltage (V) measured in volts, and resistance (Ω) measured in ohms
Electric motors can convert ( ) energy into ( ) energy
What is: Devices that convert electric energy into kinetic (Mechanical Energy)
These ____ flips over when there is too much current
What is a circuit breaker
A battery supplies this type of current
What is direct current
This is the potential energy per unit charge. It is a measure of the force that moves charges through a conducting material
What is voltage?
( ) is the rate at which electrons flow past a point in a complete electrical circuit. And ( ) is a measure of the opposition to current flow in an electrical circuit
What is current and resistance
Electromagnets power electric motors through
What is: turning into a permanent magnet. By changing the direction of the current, the poles will keep switching between N and S, and therefore cause the electromagnet to continually rotate.
These particles make up the atom, the smallest unit of matter
Electrons, protons and neutrons