For a 2200 mAh, 12 V rechargeable battery: a. Assume charging current is 220 mA and there is a 40% loss of energy (due to electrical resistance), what is the total charging time if the battery is to be charged from the empty state to the full state?  b. Assume the battery is fully charged and connected to a 20 W light bulb, if the loss during discharge is 20%, how long will the battery last before it is completely drained?

Q: Explain the working principle and operation of any one types of solar collectors.

A:

Q: Q2 Explain the workingprinciple and operationof anyone types of solar collectors.

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Q: Number of electrons in 1 Coulomb charge is a) 6.25*1021 b) 6.25*1020 c) 6.25*1025 d) 6.25*1023

A: The solution is provided in the following section.

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Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.