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NCL Technician Electrician Previous Year Paper

Option 1 : 1 A

ST 1: Safety Measures

462

20 Questions
20 Marks
25 Mins

Concept:

The power rating of a resistor: The power rating of a resistor is the specification given with a resistor that serves to tell the maximum amount of power that the resistor can withstand. At this value, the current is maximum through the resistor.

\({{P}_{rating}}=I_{rated}^{2}R\)

Calculation:

Given Prated = 2 watt

R = 2 Ω

\(I_{rated}^{2}=\frac{{{P}_{rated}}}{R}=\frac{2}{2}\)

⇒ I = 1 A