There is a light bulb connected in a parallel circuit. when the light bulb is on the circuit by itself, it has the value of all the material here
Voltage=18v current=8amp resistance 3Ω
Suppose you wish to dim the first bulb, such that its power output is at or below ___% of its value when connected alone. Find the minimum number of total bulbs you must connect in parallel to make this happen.
Solve for a general expression so you can use it for all the cases below.
50% of its actual value
35% of its actual value
10% of its actual value
2. Relevant equations
P=(v^2)/r p=I*v p=(i^2)*r
3. The attempt at a solution
i just dont understand it. can someone give me some hint or tell me how to solve this?
Thank you so much for your time and hints