· What is the relationship between heat and electricity? Please provide a
metaphor.
When current electricity I Flow
through an electric heat comes out. It looks like a when you’re running in
treadmill (the current flow is you trying loose your weight) and have to
workout hard (which is the resistance), the more you run, the more calories
burning and the heats generates, that is loosing the weight.
· Why is it warm near an incandescent light bulb?
Because of Thermal Vibration which is thermal emission.
Thermal energy along with magnitude of thermal vibration and because atoms
vibrate, heat is coming around the object.
· What is a superconductor? What are they used for in real life? You may
have to look this up. How could one make a metal a superconductor?
Superconductor is a material such as aluminum and drops with
temperature near absolute zero that without resistance can conduct electricity.
It causes that the atoms be in a rest and there is no resistance, so electrons
can move freely without any hitting to atoms.
One of the good example about superconductor using is in trains “can be made to "float" on strong
superconducting magnets, virtually eliminating friction between the train and
its tracks. Not only would conventional electromagnets waste much of the electrical
energy as heat, they would have to be physically much larger than
superconducting magnets.” http://www.superconductors.org/uses.htm
· What is Ampere's Law?
When current flow goes to electric
wire, the magnetic field with circular pattern around wire will be generated. It
is a relation, that can figure out the amount
of magnetic filed from the flow.
· If current of the same size flows in the same direction in two electric
wires placed side by side, what happens?
It creates two combinations of magnetic fields because there
are two electric wires and they all together act as a one magnetic filed and
two wires attract each other then create the force of attraction.
·
What happens if current of the same
size flows in opposite directions in two electric wires placed side by side?
The force of repulsion happens in the
wire and magnetic filed negate each other and eventually magnetic field will be
disappeared.
·
Please read
about Flemings Left and Right Hand Rule.
Flemings left and right hand rule is for Dc motors. It
explains the direction of flow in wire along with magnetic filed and force
perpendicular.
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