law stating that as long as the temperature remains constant, the resistance of a conductor remains constant, and the current is directly proportional to the voltage applied
What is Ohm's law
100
indicates how easily electricity will flow through a substance.
depends on three factors; length, thickness, and type of material.
What is resistance
100
load, switch, conductor, electrical source
What is the four basic parts of a circuit?
200
measure of how difficult it is for electrons to flow through a substance
What is resistance
200
wet
What is almost any good conductor becomes a good conductor when it's
200
an electrical circuit with only one pathway for current to flow
What is a series circuit
200
an electrical circuit with more than one pathway for current to flow
What is a parallel circuit
200
skin resistance, blood pressure and respiration
What does a polygraph machine measure?
300
resistor whose resistance can be changed by adjusting the portion of the resistor the current travels through
What is variable resistor
300
what are the two types of energy produced by resistors?
What is heat and light
300
meter used to measure electrical high current in amperes
What is ammeter
300
a resistor that becomes more conductive when exposed to light
What is why distilled water is a poor conductor of electricity
400
device usually with three layers arranged such that a small voltage thrown through the middle of the layer controls a current between the outer layers allowing the device to act as a switch or amplifier
What is a transistor
400
perfect conductor; when conducts are cooled to a very low temperature, they become better conductors. Also, substance with no resistance for electrons to flow
What is a superconductor
400
r= v/i
resistance= voltage/current(a)
What is the formula to calculate resistance?
500
device for detecting and measuring small electrical currents
What is galvanometer
500
the more resistance a substance has the more the substance gains from each electron that passes through it. Energy is radiated to it's surrounds as either heat or light energy
What is what happens when there is more resistance in a substance, and what happens to the energy
500
circuit made up of miniaturized components, especially on integrated circuit
What is microcircuit
500
a drawing of an electrical circuit made with symbols.