Compare the current through the bulb connected between B and C now to the curren

Question

Compare the current through the bulb connected between B and C now to the current through it before when there was only one bulb. The current is larger than it was before. The current n the tame at before. The current is smaller than it was before Compare the brightness the bulb connected between B and C now to its brightness before when there was only one bulb. The bulb is brighter than it wat before The bulb It just at bright as before. The bulb It dimmer than it was before Compare the potential difference carrot the bulb. V_ac, now to what it wat before when there was only one bulb The potential difference it now twice at large at before. The potential difference it now larger than before but not twice at Urge. The potential difference it the tame at before. The potential difference it now half at large at before. The potential difference it now smaller than before but not half at large None of these is correct. The following question refer to the circuit town in which four identical bulbs are connected to a battery. The twitch. S. is initially closed at town in the diagram. Which of the follow correctly ranks the bulb in brightness? All bulbs are equally bright 1 is brightest. 2 next bighted. 3 next brightest and A dimmest 1 it brightens. 2 and 3 are equally bright, and each it d-member than 1 4 it and 4 are equally bright 2 and 3 are equity bright, and dimmer than 1 or 4 Which of the following correctly ranks the currents flowing through the bulbs? All bulbs have the same current flowing through them. The current through 1 is largest 2 next largest. 3 next largest and 4 smallest. The current through 1 is largest. 2 is the same as 3. and each is smaller than 1 4 is smallest. The current through 1 and 4 Is the same. 2 is the same as 3. and each is smaller than 1 or 4 The current through 2 and 3 is the same. 1 is the same as 4. and each is smaller than 2 or 3 The current through 1 is largest. 4 is next largest. 2 is the same as 3, and each is smaller than 4 None of these is correct.

Explanation / Answer

25(c)is the correct choice

26(d)is the correct choice

explanation:

1 will be brightest, as it will get all the battery potential. 2 and 3 will have same potential across them and hence the same brightness but less than 1. 4 will have least potential drop across it and hence its brightness will be least.

1> 2 = 3 > 4

1 will get all the battery current, the combination of 2 and 3 will get current equal to battery current but since they are in parallel and resistance is equal, the current for these two will be lesser than 1. At last 4 will get all the current again since its in series with 1 and combination of 2 and 3.

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