Question

Q5. A 100 Ω iron is connected to a 220 V, 50

cycles wall plug. What is


(iii) Rms current​

Answer 1

Answer:

$1.1\sqrt{2}$

Explanation:

Given that, R = 100Ω ; $i_{0}=?;V_{0}=220V; w=50$

=> $i_{rms}=\frac{i_{0}}{\sqrt{2} } =\frac{V_{0}}{\sqrt{2}R }$

                       $=\frac{220}{\sqrt{2}*100 }$

                        $=1.1\sqrt{2}$

Answer 2

$\huge\rm\underline\purple{Question :-}$

A 100 Ω iron is connected to a 220 V, 50

cycles wall plug. What is Rms current?

$\huge\rm\underline\purple{Answer :-}$

$\green{\underline\bold{Given,}}$

• R = 100 Ω
• V = 220 Vrms
• f = 50 Hz
• ω = 2Πf = 2 × 3.14 × 50 = 314

$\red{\underline\bold{To\:find,}}$

Using the Relation,

$\boxed{ \sf \pink{ Irms \:=\frac{Vrms}{R} }}$

$\blue{\underline\bold{Now,}}$

Putting the values,

$\orange{\underline\bold{Irms\:=\frac{220}{100}}}$

= 2.2 A

$\purple{\underline\bold{∴\:The \:rms\: value\: of \:current=\:2.2A}}$

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