The input voltage can vary, in 230V countries the gear tray (which converts the supply into a controlled voltage and current suitable for the bulb) may have an 230-240V or 380-415V input.
The voltage at the lamp itself depends on the size of the lamp, smaller ones may run at about 90 volts, larger ones at 220-270 volts. However, in order to start (strike) the lamp a high voltage pulse is applied, this may be up to 30,000 volts.
It could be 100 kW for an average stadium.
19.a heat pump has a COP rating of 2.5 to 1. If 200 watts of electricity are used to run the heat pump, how many equivalent watts(heat) are produced?
A unit (as mentioned on the electricity bills) is represented in kWH or Kilowatt Hour. This is the actual electricity or energy used. If you use 1000 Watts or 1 Kilowatt of power for 1 hour then you consume 1 unit or 1 Kilowatt-Hour (kWH) of electricity.
It must be direct current for electrolysis.
well it is measuring the amount of electricity energy used
The watt or kilowatt (1000 watts) for power, volts for potential difference, amps for current
1,000 watts
19.a heat pump has a COP rating of 2.5 to 1. If 200 watts of electricity are used to run the heat pump, how many equivalent watts(heat) are produced?
A lamp post produces exactly zero watts, just like my computer produces zero watts. It is a user of electricity, not a producer. The amount of electricity used will depend on the bulb that is used in the lamp post.
The watts used is the basis of electricity charges.
90 trillion watts
approximately 100 watts
Worldwide power consumption is estimated to be around 16 terawatts (1.6*1013W)
A unit (as mentioned on the electricity bills) is represented in kWH or Kilowatt Hour. This is the actual electricity or energy used. If you use 1000 Watts or 1 Kilowatt of power for 1 hour then you consume 1 unit or 1 Kilowatt-Hour (kWH) of electricity.
It must be direct current for electrolysis.
You are confusing electrical potential (Volts) and power (Watts). The equation for power (watts) is P = VI where V is volts (a measure of electrical "pressure") and I is current in amperes (the rate of flow of electricity). If the system is 120V and the power used is 600W then the current used is 5A. If the system is 240V and the power used is 600W then the current used is 2.5A.
well it is measuring the amount of electricity energy used
100 watts