Question

which device increase or decrease the brightness of bulb​

Answer 1

Answer:

resistor.....

Explanation:

resistor is the correct answer....

hope it will help u...

mark me the best one...

Answer 2

Answer:

Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter. See, the parallel combination of resistors reduces the effective resistance of the circuit. The voltage drop across each resistance is the same as the applied one

Explanation:

A light bulb can be brighter by increasing current passing though the bulb and reduce way of the current going to the bulb.

We can say cuurent passing though bulb is directly proportional to current passing through bulb.