Which Of The Following Is Not A Unit Of Conductance? 1. Siemens 2. Siemens Per Meter 3. 1/ohm 4. Mho How Much Energy In Kilowatt Hours Is Consumed In Operating Ten 50 Watt Bulbs For 10 Hours Per Day In A Month?

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**Understanding Conductance and Energy Consumption: A Comprehensive Guide**

What is Conductance?

Conductance is a measure of the ability of a material to conduct electricity. It is the reciprocal of resistance and is measured in units of amperes per volt (A/V). Conductance is an important concept in physics and engineering, as it helps us understand how different materials behave when it comes to electricity.

Units of Conductance

There are several units of conductance, including:

  • Siemens (S): The siemens is the SI unit of conductance. It is defined as the reciprocal of the ohm, which is the unit of resistance.
  • Siemens per meter (S/m): This unit is used to measure the conductance of a material per unit length.
  • Mho (Ω^-1): The mho is an older unit of conductance that is equivalent to the siemens.

Which of the Following is Not a Unit of Conductance?

  1. Siemens (S): This is a unit of conductance.
  2. Siemens per meter (S/m): This is also a unit of conductance.
  3. 1/ohm: This is not a unit of conductance, but rather a unit of conductance per unit resistance.
  4. Mho (Ω^-1): This is a unit of conductance.

Answer: The correct answer is 3. 1/ohm. This is not a unit of conductance, but rather a unit of conductance per unit resistance.

Energy Consumption: Calculating Kilowatt Hours

What is Kilowatt Hour (kWh)?

A kilowatt hour (kWh) is a unit of energy that represents the amount of energy consumed by a device or appliance over a period of time. It is calculated by multiplying the power consumption of the device in kilowatts (kW) by the number of hours it is used.

Calculating Energy Consumption

To calculate the energy consumption of a device or appliance, you need to know its power consumption in watts (W) and the number of hours it is used. You can then convert the power consumption to kilowatts (kW) and multiply it by the number of hours to get the energy consumption in kilowatt hours (kWh).

Example: Calculating Energy Consumption of 50 Watt Bulbs

Question: How much energy in kilowatt hours is consumed in operating ten 50 watt bulbs for 10 hours per day in a month?

Answer: To calculate the energy consumption, we need to know the power consumption of the bulbs in kilowatts (kW) and the number of hours they are used.

  • Power consumption of one 50 watt bulb = 50 W / 1000 = 0.05 kW
  • Number of bulbs = 10
  • Number of hours per day = 10 hours
  • Number of days in a month = 30

Calculating Energy Consumption:

  1. Calculate the total power consumption of the bulbs in kilowatts (kW):
    • Total power consumption = 0.05 kW/bulb x 10 bulbs = 0.5 kW
  2. Calculate the total energy consumption in kilowatt hours (kWh):
    • Total energy consumption = 0.5 kW x 10 hours/day x 30 days = 150 kWh

Answer: The energy consumption of ten 50 watt bulbs for 10 hours per day in a month is 150 kWh.

Conclusion

In conclusion, conductance is an important concept in physics and engineering that helps us understand how different materials behave when it comes to electricity. The siemens and mho are units of conductance, while the ohm is a unit of resistance. Calculating energy consumption in kilowatt hours is an important aspect of understanding how much energy is consumed by devices and appliances. By following the steps outlined in this article, you can calculate the energy consumption of any device or appliance.