00:01
We're told here to consider electric heaters that are rated at 4 kilowatts.
00:09
And in part one, we're told that the potential difference across the heating element is 230 volts.
00:21
We're asked then to find the current flowing through the electric heater.
00:25
We can use a version of olmslaw that says that the current will be equal to.
00:31
The power over the potential difference.
00:36
And so dividing those two numbers, 4 ,000 watts by 230 bolts, we get a current of about 17 amps.
00:52
In part two, we're told that there are nine heaters, and that each heater runs for 30 weeks, four days a week, or sorry, for an average of four hours per day, seven days a week for an average of four hours per day, sorry.
01:26
And then we're asked if the cost of electricity is, i believe that is euros, but 19 cents per kilowatt hour.
01:41
What would be the cost to heat the home for the entire year...