Electricity I
What is electricity?
A flow of electric charge
Device for measuring current is...
ammeter
What is the unit of current?
Ampere (Amp)
What is the unit of voltage?
Volt (V)
Name a dwarf planet in our solar system
Pluto
What small power source goes inside remotes and toys?
A battery
Which material is a better conductor: copper, silver, iron or gold?
silver
The inventor of the light bulb is...
Thomas Alwa Edision
Why might too much current be dangerous?
Overheating / fire / electric shock
Is biogas renewable?
Yes
What must a circuit be for electricity to flow?
Closed (complete)
A flow of electricity through a conductor is called an
electric current
What does LED stand for?
Light-Emitting-Diode
What's the unit for magnetic field strength?
Tesla
which has existed on earth for longer: sharks, Trees or Apes.
Sharks
Name one source of electrical energy
Battery/cell/mains/solar cell
What happens to resistance when a wire gets longer?
resistance increases
The inventor of the telephone is...
Alexander Graham Bell
If one bulb breaks in a parallel circuit, what happens?
Others stay on
What's the most commonly used type of screen on phones?
LCD (Liquid Crystal Display)
Which type of circuits is used in homes?
Parallel circuits
What happens to the resistance of a thermistor when temperature increases?
resistance increases
who developed developed the system of alternating current (AC) used to transmit electricity efficiently over long distances.
Nikola Tesla
What was the hardest colour of LED to manufacture?
Blue
What is the name of the message sent into space aboard Voyager 1 for any extraterrestrial life to find?
The Golden Record