electric current
In metal wires, electrons carry the current. This topic is part of Electricity within Science & Nature. This page currently draws on 12 supporting questions, with answers and bonus facts available below.
electric current trivia questions
Electric current is the flow of what?
Answer: Electric charge
Bonus fact: In metal wires, electrons carry the current.
What is the SI unit of electric current?
Answer: Ampere
Bonus fact: One ampere is one coulomb of charge per second.
In a metal wire, conventional current direction is opposite the motion of what?
Answer: Electrons
Bonus fact: Current direction was defined before electron flow was understood.
Electric current is the movement of what?
Answer: Electric charge
Bonus fact: In metal wires, electric current is associated with the motion of electrons.
An electrode is a conductor through which electric current enters or leaves what?
Answer: A material or device
Bonus fact: Electrodes connect circuits to electrolytes, gases, or semiconductors.
What does LED stand for?
Answer: Light-emitting diode
Bonus fact: A light-emitting diode produces light when electric current passes through a semiconductor junction.
In an incandescent light bulb, the filament gets hot enough to do what?
Answer: Glow
Bonus fact: Electric current heats the filament until it emits visible light.
A magnetic field surrounds what kinds of objects?
Answer: Magnets and electric currents
Bonus fact: Moving electric charges create magnetic fields.
An insulator resists the flow of heat or what?
Answer: Electric current
Bonus fact: Insulators can be thermal or electrical.
An electric circuit must provide a complete path for what?
Answer: Electric current
Bonus fact: A closed circuit allows charge to flow.
An electromagnet becomes magnetic when what flows?
Answer: Electric current
Bonus fact: Current through a coil creates a magnetic field.
What happens at a photovoltaic junction when light frees charge carriers?
Answer: An electric current can flow
Bonus fact: An internal electric field separates electrons and holes.