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प्रश्न
How does the heat produced by die passage of current in a metallic wire depend on the current in the wire?
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उत्तर
The heat produced is proportional to the square of current passed in the wire.
संबंधित प्रश्न
1 calorie = _________ joule.
When an electric lamp is connected to 12 V battery, it draws a current of 0.5 A. The power of the lamp is:
(a) 0.5 W
(b) 6 W
(c) 12 W
(d) 24 W
Which of the following is likely to be the correct wattage for an electric iron used in our homes?
(a) 60 W
(b) 250 W
(c) 850 W
(d) 2000 W
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Calculate the resistance of an electric bulb which allows a 10 A current when connected to a 220 V power source.
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State other bigger units of electric power and express them in watt.
1 mV is equal to:
