Famous Inventors
Who invented the Light bulb?
Thomas Edison
What machine, improved by James Watt in 1769, became the main source of power for factories and locomotives?
The steam engine
What do we measure electric current in?
Amperes (A)
Which English scientist discovered electromagnetic induction in 1831, making the electric generator possible?
Michael Faraday
This famous inventor and politician discovered that lightning is a form of electricity using a kite experiment.
Benjamin Franklin
Who invented alternating current/AC?
Nikola Tesla
What machine invented by James Hargreaves in 1764 allowed one worker to spin multiple threads at once?
Spinning Jenny
What does the tool we use to measure voltage, amperes and resistance?
Which American inventor perfected the incandescent light bulb, allowing factories to stay open and operate safely at night?
Thomas Edison
Coal was burned to heat water and create this, which powered many early machines and factories.
Steam
Who invented the telephone?
Alexander Graham bell
What steam-powered vehicle did Richard Trevithick build in 1804, changing transportation forever?
The steam locomotive
What does the letter "V" stand for in electricity?
Voltage
Nikola Tesla championed a specific type of electrical current that proved best for transmitting power over long distances to factories. What is it called?
Alternating Current
This natural force is produced by moving electric charges and powers homes, factories, and cities today.
Electricity
How did Alessandro Volta contribute to the study of electricity?
Volta invented the electrical battery.
What machine did Edmund Cartwright invent in 1785 that used power to automate the weaving of cloth?
The power loom
What law describes the relationship between voltage, current, and resistance?
Ohms Law
What did the very first factories use as mechanical power to drive their machinery before the electric motor was invented?
Steam engines (powerd by coal) or Water wheels
This scientist discovered electromagnetic induction, making modern generators possible.
Michael Faraday
Which inventor had the greatest impact on the industrial use of electricity, and why?
Many consider Tesla to have had the greatest impact because his AC system.
What machine, patented by Richard Arkwright in 1769, used a series of rollers to spin cotton into strong thread and was one of the first machines used in factories?
The water frame
If a circuit has 12 V and a resistance of 13 ohms, what will be the current?
I= U/R =12V/13ohm = 0,923A
In the late 1800s, factories stopped using one single, giant steam engine in the ceiling. What did each individual machine get instead?
An electric motor
This invention made it possible to produce electricity on a large scale by converting mechanical energy into electrical energy.
Electric generator