B and E Blocks entered the world of electric potential energy today. Particle have potential energy based on their position in an electric field and changing that position will cause the value of the potential energy to change. Since work is being done on or by an object when potential energy changes, we can liken this to charges doing work (like powering a lightbulb) or having work done on them (moving through a battery). We distinguished PEelec from electric potential (PEelec/q) and potential difference (ΔPEelec/q). We'll work with potential difference a lot in the coming weeks as we move through ideas of electric current and circuits. In lab tomorrow for B Block, potential difference will help students investigate the properties of a capacitor, calculating the RC time constant for a variety of capacitor-resistor combinations. E Block jumps into the area of batteries and how potential difference makes them work.
C Block conducted their static electricity lab, investigating how objects can acquire charge through friction, conduction and induction, and how the resulting forces can cause changes in the motion of matter. If you didn't hand this in today, remember to have it tomorrow, along with the additional homework items I put on the board.
F Block spot-checked their problem-solving skills for electric fields and forces. make sure you can calculate the net electric field at a point in a field of particles and the force on a charge particle resulting from multiple charges. Tomorrow, we expand on our discussion of charges to bring in energy and changes in energy due to particle motion.
C Block conducted their static electricity lab, investigating how objects can acquire charge through friction, conduction and induction, and how the resulting forces can cause changes in the motion of matter. If you didn't hand this in today, remember to have it tomorrow, along with the additional homework items I put on the board.
F Block spot-checked their problem-solving skills for electric fields and forces. make sure you can calculate the net electric field at a point in a field of particles and the force on a charge particle resulting from multiple charges. Tomorrow, we expand on our discussion of charges to bring in energy and changes in energy due to particle motion.
