6 A lamp filament is to have its resistance measured by the voltmeter/ammeter method. The test voltage is 120 V while the voltmeter and ammeter resistances are 1500 2 and 0.08 2 respectively. If when connected long-shunt the ammeter reads 0.125 A, determine the percentage error of the apparent resistance measurement when the circuit is connected: (a) long-shunt (b) short-shunt

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A: given

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A:

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A: The solution is provided in the following section.

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A: Given resistor values are: 100 Ohm220 Ohm 390 Ohm 560 Ohm 1000 Ohm

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.