Question

in a series circuit, as light bulbs are added, the voltage at the battery increases/decreasees/remains the same

in a series circuit, as light builbs are added, the current at the battery increases/decreases, remains the same.

Answer 1

Voltage at battery remains the same, but the current decreases. Addiing lightbulb increases the total resistance of the circuit, hence decreases current.

Answer 2

so in a parallel circuit, voltage would be the same, and current would increase because of decrease in resistance?

Answer 3

Yes,

Answer 4

but i thought if a light bulb were removed/added, its brightness wouldn't change

Answer 5

in parallel

Answer 6

You could try if you want :)
Which part makes you think like that.

Answer 7

nvm you're right, thanks!