Question

1. Exactly when is the electric power generated that you use in homes in Canada?

2. What is the underlying reason that the typical voltage of most battery cells is in the

   order of some Volts and not significantly higher?

3. Typical metals have an increased resistance at higher temperatures. For a usual

   incandescent light bulb, when does the highest current flow?

Answer 1

Ans. Electric power is usually generated by a power plant with the process of combustion or nuclear fission driven by heat engines with the help of electromechanical generator. In this process of production of electricity, a primary energy is converted into electricity.

The battery of device produces a voltage potential. By charging the voltage is increased and by discharging voltage is decreased. This process is takes place in presence of current flow and internal battery resistance. Mostly the voltage of battery is in the volts rather than high volts.

Typically the resistance of a material is increase by increasing its temperature. For pure metals there have positive temperature coefficient of resistance. As the conductor is heat up, due to vibration if atoms, there is a rise of electrical current. The conductor hence becomes as nore resistant for flowing of current as there exist potential difference between the end of the conductor.

The electric current is flows through the bulb as the bulb is attached to the power supply by the means if wires and the filament. If they are heated up in the form of higher temperature, they will emitted the higher current level. The thin is the conductor of bulb the more is the ability to heat is more for that conductor. When the bulb are connected in parallel combinations they produce more energy.