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একটি বৈদ্যুতিক ইস্ত্রিতে 220 Volt এবং 1200 watt লেখা আছে । এর রোধ কত ?
40 ওহম
30 ওহম
20 ওহম
10 ওহম
ANSWER : 1
Descrption
<p style="margin-left:0px;"><strong>40 ওহম</strong>।</p><p style="margin-left:0px;">ওহমের সূত্রানুসারে,</p><p>P = V^2 / R </p><p style="margin-left:0px;">যেখানে,</p><ul><li>P হল শক্তি, ওয়াটে (W)</li><li>V হল ভোল্টেজ, ভোল্টে (V)</li><li>R হল রোধ, ওহমে (Ω)</li></ul><p style="margin-left:0px;">সুতরাং,</p><p>R = V^2 / P </p><p style="margin-left:0px;">এই ক্ষেত্রে,</p><ul><li>V = 220 V</li><li>P = 1200 W</li></ul><p style="margin-left:0px;">সুতরাং,</p><p>R = (220 V)^2 / 1200 W </p><p>R = 40 Ω </p><p style="margin-left:0px;">অতএব, বৈদ্যুতিক ইস্ত্রির রোধ 40 ওহম।</p>
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