Question | Answer |
If a transistor is used as an amplifier, will the current in the circuit increase, decrease, or remain the same? | increase
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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 |