Iceland uses a voltage of 220v instead of of the US 110v. So you fly to Iceland with a box of bulbs ,that has been assorted with 30, 60 and 90 Watt light bulbs.U connect it through icelandic electrical socket. The fact that u 'll actually be using AC current will affect neither the equation used nor your answer.
HINT: The light bulbs filaments' length , area, and resistivity do not change when connected to the generator.
So what is the question?
Power= V^2/R so if V is doubled, power is quadrupled in the same resistance.
Sorry for writing the incomplete question.
But yeah..it is how much power do your 30, 60, 90 watt light bubls use when connected to icelandic electrical sockets?
Re-read my answer.
To determine the equivalent power consumption of the light bulbs when connected to an Icelandic electrical socket, we can use the formula:
Power (P) = Voltage (V) * Current (I)
Given that the voltage in Iceland is 220V, the equation remains the same as when connecting to a US socket. The resistance of the bulbs does not change with the voltage, so we only need to find the current flowing through the bulbs.
Using Ohm's Law:
Resistance (R) = Voltage (V) / Current (I)
Since the resistance remains constant, we can rearrange the equation to solve for current:
Current (I) = Voltage (V) / Resistance (R)
Now, since the resistance doesn't change, the current flowing through the bulbs will be halved in Iceland compared to the US due to the doubled voltage. This means that the power consumption of the bulbs will also be halved.
For example, if you have a 60W bulb in the US, when connected to an Icelandic socket it will have a power consumption of 30W.
Therefore, when connecting the assorted box of bulbs (30W, 60W, and 90W) to an Icelandic electrical socket, the equivalent power consumption will be 15W, 30W, and 45W respectively.