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QR Challenge: Physics 5: Electric & Magnetic Phenomena

QuestionAnswer
If a transistor is used as an amplifier, will the current in the circuit increase, decrease, or remain the same?increase
What part of the circuit does the transistor effect: the power or the current?current
When the transistor is acting as a switch, what is it doing?turning signals on and off
What are the two ways that a transistor can effect a circuit?switch and amplifier
Computers run on binary code, which means signals are all a series of 0 or 1 signals. In this case, transistors are acting as...switches
Draw the electric field around a positively charged particle next to a negatively charged particle.drawing should show arrows connecting two dots and the arrows should point from positive to negative
Draw the electric field around a negatively charged particle next to another negatively charged particle.drawing should show arrows with an asymptote shape with arrows pointing towards the particles.
What happens when two positively charged particles are next to each other?they repel
What happens when a positively charged particle is brought near a negatively charged particle?they attract
When electrons are added to an atom, the charge becomes more...negative
When a magnet is moved through a coil of wire, a current is induced in the wire. Name 3 ways to increase the amount of current induced in the wire.move the magnet faster, increase the strength of the magnet, increase the number of coils.
A student wrapped a coil of wire around a magnet and noticed that no current was induced in the wire. They tried wrapping wire around a much stronger magnet. What did they observe?No current is induced because the magnet isn't moving.
What has to be true for a magnetic field to induce an electric field?the magnetic field must be changing
Wind turbines and water falls at damns generate electricity using magnets. Briefly describe how they work.wind or water spins a magnet, changing the magnetic field, which induces electric current
When a magnet is used to create electric current, this is called __________ __________.electromagnetic induction
The fourth state of matter.plasma
Plasmas can conduct electricity because they are composed of ___________ particles. charged
Ions are simply atoms that have lost or gained ___________, which make them positively or negatively charged.electrons
Plasmas are the highest ____________ state of matter. Examples of plasmas include neon signs, stars, and lightning.energy
Plasmas are the only state of matter that always conducts _____________ because they are composed of charged particles.electricity

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