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(a) On what factors does the heating effect of current depend and how? (b) Establish the relationship between 1 kWh and SI unit of energy. |
Answer» <html><body><p><strong>Explanation:</strong></p><ul><li>When current flows through a conductor, heat energy is generated in the conductor. The heating effect of an electric current depends on three factors: The resistance, R of the conductor. A higher resistance produces more heat.</li><li>The SI unit of energy is <a href="https://interviewquestions.tuteehub.com/tag/joule-526299" style="font-weight:bold;" target="_blank" title="Click to know more about JOULE">JOULE</a> and its commercial unit is kWh.</li></ul><p></p><p>The <a href="https://interviewquestions.tuteehub.com/tag/relationship-1183331" style="font-weight:bold;" target="_blank" title="Click to know more about RELATIONSHIP">RELATIONSHIP</a> between 1 kWh and SI unit of energy is as <a href="https://interviewquestions.tuteehub.com/tag/follows-994526" style="font-weight:bold;" target="_blank" title="Click to know more about FOLLOWS">FOLLOWS</a>: </p><p>1 kWh = 1 kW x 1 h</p><p></p><p>= <a href="https://interviewquestions.tuteehub.com/tag/1000-265236" style="font-weight:bold;" target="_blank" title="Click to know more about 1000">1000</a> W x 3600 s</p><p></p><p>1 watt - second = 1 joule</p><p></p><p>1 kWh = 3600000 J</p></body></html> | |