l. what is the difference between a real independent voltagesource and an ideal independent voltage source? Give an example ofa real voltage source and explain how it differs from theideal.
2. What does it mean when we say that a circuit containingmultiple sources is invalid?Give an example of such a circuit andexplain why it is invalid.
3. What is resistance? What is a node? What is a closedloop?
4. Write the equations for Ohm's law and for Kirchoff s twolaws.
5. Explain how one can distinguish between two circuit elementswhich are connected inseries verses two circuit elements which areconnected in parallel.
6.  If the two headlights of a car each dissipate 55Wand each of them are connected to the two terminals of a 12Vbafiery, draw an electric circtrit diagram which can model thisheadlight circuit and find the resistance of each headlight when itis turned on. Find the total current coming from the battery. Ifthe battery is rated at 65 A-hr, how long will the headlightscontinue to burn before the battery is dead? Show allcalculations.
