The main objective of a physical map is to show landforms, bodies of water and other geographical features. Features shown include mountains, deserts and lowlands as well as lakes, rivers and oceans.
Depending on your electricity prices, a 400 watt HID will cost $200 â $400 each year of use, plus the cost of replacement bulbs. LEDs meant to replace 400w HIDs average around 180 watts.
Report Abuse. According to Atlantic electricity the cost per kilo watt hour is 2.22 so to run a steam iron rated at 2400 W per hour would be 2.4 x 2.22 pence = 5.28 pence.Source(s): Atlantic electric prices summer 2006.Phil Â· 9 years ago.'m with Atlantic and it's about 12p per KWH. However an iron has a thermostat and does not draw the current all the time so it would be less than the full amount. I'd guess so something in the region of 20p.