Question

A potential difference of 100 V is appliedacross a resistor of resistance 50 ohms for 6 minutes58 seconds. Find the heat produced in(i) joule (ii) calorie.

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Answer 1

Your Question →

• A potential difference of 100V is applied across a resistor of resistance 50Ω for 6 minutes and 58 seconds. Find the heat produced in 1) joule 2) calorie

Your Answer →

• Given potential difference V = 100volts,
• Resistance of the resistor, R = 50ohms.
• So power produced in the circuit , P =(V^2)/R

i.e. P = 100*100/50 = 200 watt = 200 J/s.

• But we know, P = energy/ time
• So, energy = power * time
• Time should be taken in it's standard units i.e seconds

• 6min 58 seconds = (6*60)+58 = 418 seconds.
• Energy = (200 *418)J = 83,600J
• We know that 1calorie = 4.184J
• So, energy= (83,600)/4.184 = 19,980.87 calories.

• Final answer :-

(1) energy = 83,600

(2) energy = 19,980.87 calories.

Hope it helps uh...

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Thank uh...!!