Physics 6C, Summer 2006 Homework 2 Solutions
... (a) Since the current in the wire is constant, the magnetic field through the circuit does not vary with time. This means the magnetic flux through the circuit is not changing, so the induced current is zero. (b) Since the current in the wire is increasing, its magnetic field (and therefore the flux ...
... (a) Since the current in the wire is constant, the magnetic field through the circuit does not vary with time. This means the magnetic flux through the circuit is not changing, so the induced current is zero. (b) Since the current in the wire is increasing, its magnetic field (and therefore the flux ...
Current, voltage and resistance activity - Teacher instructions
... P2.2 (8) recall that for some components the value of R remains constant (fixed resistors) but that in others (heating elements, lamp filaments) it can change as the current changes P2.2(10) represent circuits with the conventions of positive and negative terminals, and the symbols that represent co ...
... P2.2 (8) recall that for some components the value of R remains constant (fixed resistors) but that in others (heating elements, lamp filaments) it can change as the current changes P2.2(10) represent circuits with the conventions of positive and negative terminals, and the symbols that represent co ...
AC Circuits & Phasors
... We got it from connecting field lines (Gauss’ law!) + geometry. So, while Gauss “derived” his law from Coulomb, Gauss’ Law is better. It’s always true, while Coulomb’s law is only true for unaccelerated charges. ...
... We got it from connecting field lines (Gauss’ law!) + geometry. So, while Gauss “derived” his law from Coulomb, Gauss’ Law is better. It’s always true, while Coulomb’s law is only true for unaccelerated charges. ...
6. Ohm`s Law Lab
... 10. Connect the power supply, 100-Ω resistor, wires, and clips as shown in Figure 1 above. The positive lead from the power supply and the red terminal from the Current & Voltage Probe are connected as shown. Note: Attach the red connectors to the positive side of the power supply. 11. Make sure the ...
... 10. Connect the power supply, 100-Ω resistor, wires, and clips as shown in Figure 1 above. The positive lead from the power supply and the red terminal from the Current & Voltage Probe are connected as shown. Note: Attach the red connectors to the positive side of the power supply. 11. Make sure the ...
Extreme Dimming
... If you thought the issues we had in lesson 1 were a problem its about to get much harder. ...
... If you thought the issues we had in lesson 1 were a problem its about to get much harder. ...
L25 - University of Iowa Physics
... you use a battery as the voltage source. • the direction of the current depends on how you connect the battery • the electricity that you get from the power company is not DC it is AC (alternating). • We will discuss AC in the next lecture ...
... you use a battery as the voltage source. • the direction of the current depends on how you connect the battery • the electricity that you get from the power company is not DC it is AC (alternating). • We will discuss AC in the next lecture ...
Electricity Study Guide KEY
... 12. What can you predict would happen to the resistance in a device if the voltage decreases, but the current stays the same? Explain how you arrived at this answer. You can show an example if necessary. Resistance decreases 13. What can you predict would happen to the voltage in a device if the res ...
... 12. What can you predict would happen to the resistance in a device if the voltage decreases, but the current stays the same? Explain how you arrived at this answer. You can show an example if necessary. Resistance decreases 13. What can you predict would happen to the voltage in a device if the res ...
UNDERSTANDING HPS BALLASTS
... restrike and operate until it again exceeds the available power supply voltage. This cycling of "strike-burn-drop outcool-strike-burn-drop out" is typical of lamps which have reached near end of life. These lamps will ultimately fail to cycle or restrike and must be replaced. ...
... restrike and operate until it again exceeds the available power supply voltage. This cycling of "strike-burn-drop outcool-strike-burn-drop out" is typical of lamps which have reached near end of life. These lamps will ultimately fail to cycle or restrike and must be replaced. ...
iD8783 - iDESYN
... There is a cycle-by-cycle current limit on the high-side MOSFET of 3A (typ). When the current flowing out of SW exceeds this limit, the high-side MOSFET turns off and the synchronous rectifier turns on. Unlike the traditional method of current limiting by limiting the voltage at the compensation pin ...
... There is a cycle-by-cycle current limit on the high-side MOSFET of 3A (typ). When the current flowing out of SW exceeds this limit, the high-side MOSFET turns off and the synchronous rectifier turns on. Unlike the traditional method of current limiting by limiting the voltage at the compensation pin ...
Electrical ballast
An electrical ballast is a device intended to limit the amount of current in an electric circuit. A familiar and widely used example is the inductive ballast used in fluorescent lamps, to limit the current through the tube, which would otherwise rise to destructive levels due to the tube's negative resistance characteristic.Ballasts vary in design complexity. They can be as simple as a series resistor or inductor, capacitors, or a combination thereof or as complex as electronic ballasts used with fluorescent lamps and high-intensity discharge lamps.