Suppose you replaced the 15W bulb with a 25W in each of the circuits to get circ

Question

Suppose you replaced the 15W bulb with a 25W in each of the circuits to get circuits D, E, and F as shown in the figure below. Rank the circuits based on relative brightness of the 25W replacement bulb in each circuit. Explain your reasoning.

Household incandescent bulbs are stamped with 120V, Would a 25-W 120-V household bulbs have higher or lower resistance than the 25-W 12-V bulb you used in this experiment? Suppose you replaced the 15-W bulb with 25-W in each of the circuits to get circuits D, E and F as shown in Figure 2 below. Rank the circuits based on the relative brightness of the 25-W replacement bulb in each circuit. Explain your reasoning. Figure 2. Three circuits to rank as instructed in Question 10.

Explanation / Answer

F > E > D

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