In the circuit represented by the figure below the bulb B has a higher electrica

Question

In the circuit represented by the figure below the bulb B has a higher electrical resistance than the two outside bulbs. The current through the battery is 1.6mA, i.e., 10^16 electrons pass any point in the battery per second. How do you think the current through bulb A compares to the current through bulb B? Explain. How do you think the current through bulb A compares to the current through bulb C? Explain. How do you think the current through bulb B compares to the current through bulb C? Explain. How do you think these bulbs will compare on brightness? Explain.

Explanation / Answer

A) since the bulbs A ,B and C all are in series so current through all resistors is same.

B) all bulbs are in series as we discussed above so current through all resistors is same.

C) same as we discussed in part (a) and (b) above

D) now as we know from ohm' s law for same value of current , resistance is directly proportional to voltage drop.

As we know again , P = VI

Now again, for same current , voltage is directly proportional to power. More is potential drop across the bulb B more will be the power. So brightness of bulb B is more than the other bulbs.

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