P-4+Electricity+and+Magnetism

[] [] [] || 4. 5.Links [] [] [] 6. In a cheap set of Christmas lights, due to teh series circuitry, if one light bulb burns out the entire string of lights doesn't work. However, in the NICE sets of Christmas lights, due to the parallel circuitry, if a light bulb burns out then the rest of the string of lights will still work. 7. A particular electronic-code lock provides over 500 billion combinations. Moreover, it can sustain an electric shock of 1.25 X 10^5 V. Suppose this potential difference is applied across a series connection of the following resistors: 11.0k Ohms, 34.0k Ohms, and 215k Ohms. What is the equivalent resistance ofor the circuit? What current would pass through the resistors? || 4. 5.Links [|http://en.wikipedia.org/wiki/Ohm's_law] [] [] 6. Ohm's law is especially important in power plants. The resistance of each wire must be known so that they can send the right amount of current into the wires in order to get the volatage necessary. 7. The resistance of a steam iron is 19.0 Ohm's. What is the curren in the iron when it is connected across a potential difference of 120 V. || 4. 5.Links [] [] [] 6. Electrical plugs are an example of an alternating current and it requires two plugs, and thus, two wires. Batteries are an example of a direct current and it one requires one closed path and some form of resistance to work. 7. An electric space heater is connected across a 120 V outlet. The heater dissipates 1320 W of power in the form of electromagnetic radiation and heat. Calculate the resistance of the heater. ||
 * ====Standard P-4:==== || ====The student will demonstrate an understanding of the properties of electricity and magnetism and the relationships between them.==== ||
 * Indicators:**
 * || P-4.1 || [|Recognize the characteristics of static charge and explain how a static charge is generated.]5. Links
 * || P-4.1 || [|Recognize the characteristics of static charge and explain how a static charge is generated.]5. Links
 * || P-4.2 || [|Use diagrams to illustrate an electric field (including point charges and electric field lines).] ||
 * || P-4.3 || [|Summarize current, potential difference, and resistance in terms of electrons.] ||
 * || P-4.4 || [|Compare how current, voltage, and resistance are measured in a series and in a parallel electric circuit and identify the appropriate units of measurement.]
 * || P-4.5 || [|Analyze the relationships among voltage, resistance, and current in a complex circuit by using Ohm's law to calculate voltage, resistance, and current at each resistor, any branch, and the overall circuit.]
 * || P-4.6 || [|Differentiate between alternating current (AC) and direct current (DC) in electrical circuits.]#4.[[file:ACvoltage.pdf]]
 * || P-4.7 || [|Carry out calculations for electric power and electric energy for circuits.] ||
 * || P-4.8 || [|Summarize the function of electrical safety components (including fuses, surge protectors, and breakers).] ||
 * || P-4.9 || [|Explain the effects of magnetic forces on the production of electrical currents and on current carrying wires and moving charges.] ||
 * || P-4.10 || [|Distinguish between the function of motors and generators on the basis of the use of electricity and magnetism by each.] ||
 * || P-4.11 || [|Predict the cost of operating an electrical device by determining the amount of electrical power and electrical energy in the circuit.] ||
 * |||| [|All indicators in Standard P-4, in a combined document] ||
 * |||| [|All indicators in Standard P-4, in a combined document] ||