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6000J of heat is generated when 2A current is passed through a resistor for 4 minutes . what is the resistance of the resistor? |
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Answer» 6.25 OhmsExplanation:W = 6000 JI = 2 At = 4 mins = 4 × 60 = 240 sW = VIt6000 = V × 2 × 240V = 6000 ÷ 480 = 12.5Now, W = V²t/R6000 = (12.5 × 12.5 ×240)/R∴ R = (12.5 × 12.5 × 240) / 6000⇒R = 6.25 OhmsHope it HELPS... |
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