4. Which configuration (parallel or series) consumes more power (PV)? Explain wh

Question

4. Which configuration (parallel or series) consumes more power (PV)? Explain why. (2 points) 5. An Ohmic device is one that obeys Ohm's Law. According to your data, are carbon resistors Ohmic devices? Support your answer with references to your graphs and/or equations. (1 point) 6. From part 5.1.4 (Light Bulb): In reality a light bulb is not an ideal resistor. As the light bulb heats up its resistance increases. Pretend you measured the current through a light bulb at different voltages and arrived at this data: 2.5 28.4 2.0 Voltage (V) [0.5 Current (mA) 13.1 1.5 18.2 21.9 25.1 31.0 Plot a voltage as a function of current for this data. Please connect the dots instead of adding a best fit line. What can you say about the resistance of the light bulb? (1 point) 7. When a typical circuit is switched on, the net displacement of electrons along a wire is about 1 mm per second. If electrons have such a low net speed, why do lights and devices appear to work instantaneously when switched on? (1 point) 8. Calculate the total power (P-VI) for two light bulbs in series and in parallel. Which uses more power? Explain why. (2 points)

Explanation / Answer

I am answering question number 4 (first question).

In parallel, voltage across each device is same, also the path for current flow is more larger, as wires are there, so, in general, power consumed in parallel combination is more.

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