Question

Sal connected four light bulbs in a parallel circuit. If Sal adds another light bulb, what is true about the current in each bulb?
A) The current decreased when a fourth bulb was added.

B) The current in the four bulbs is much less than the current in three bulbs.

C) The current in each bulb remained the same even though another bulb was added.

D) The current in the fourth bulb is less than the current int he other three bulbs.

Answer 1

The answer is C) The current in each bulb remained the same even though another bulb was added.

Answer 2

Since all the bulbs are connected in parallel with each other

so here voltage across each bulb will remains the same

so here we will have

$V = i R$

now all bulbs are identical and we have same voltage source across all the bulbs

so we will have current in each bulb given by same equation

$i = \frac{V}{R}$

now we can say that correct answer will be

C) The current in each bulb remained the same even though another bulb was added.