एक विद्युत बल्ब एका 200 V जनित्राशी जोडलेला आहे. विद्युत धारा 0.5 A आहे. बल्बची शक्ती किती आहे?

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ALP CBT 2 Physics and Maths Previous Paper 4 (Held On: 22 Jan 2019 Shift 1)
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  1. 10 वॅट
  2. 1000 वॅट
  3. 1 वॅट
  4. 100 वॅट

Answer (Detailed Solution Below)

Option 4 : 100 वॅट
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संकल्पना:

विद्युत शक्ती: ज्या दराने विद्युत ऊर्जेचे उर्जेच्या इतर प्रकारांमध्ये अपघटन होते त्यास विद्युत शक्ती
म्हणतात, म्हणजे;

\(P = \frac{W}{t} = VI = {I^2}R = \frac{{{V^2}}}{R}\)

जेथे V = विभवांतर, R = रोध आणि I = विद्युत धारा.

गणना:

दिलेल्याप्रमाणे - विभवांतर (V) = 200 V आणि विद्युत धारा (I) = 0.5 A

  • विद्युत शक्ती खालील स्वरूपात लिहिली जाऊ शकते,

​⇒ P = VI

⇒ P = 200 x 0.5 = 100 W

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