Voltage Required for 10A Through 6 Ohm Light Bulb

[jimmy_neutron]

My question is this: what voltage must a battery have to support 10A of current trhough a light bulb with resistance 6 Ohms.

Is the answer simply found by: V = R x I ---- V = 6 x 10 = 60V

I believe this is correct.

Part II of my question is if you kept the same battery, but added a second light bulb in series, would the original bulb's brightness increase, decrease, or stay the same.
I believethat the original bulbs brightness would decrease because there is still only one source of energy, the battery, powering 2 light bulbs.

Can someone tell me if I am on the right track. Thank you so much!

 

[Integral]

Yes, you are correct.

 

[kyle8921]

Yes, you are on the right track. The voltage required for a 6 ohm light bulb with 10A of current would be 60V, as calculated using Ohm's Law (V = R x I). Adding a second light bulb in series would increase the overall resistance in the circuit, resulting in a decrease in current and therefore a decrease in the brightness of the original bulb. This is because the battery's voltage remains the same, but it is now being divided between two bulbs, resulting in a decrease in the amount of energy available to each bulb.