Questions
A coil is embedded in a block of ice placed in an insulator box. If a current of1 . 0 amp is passed through the coil by applying a potential difference of 210 V across it, the amount of ice melted in one hour is
detailed solution
Correct option is B
Heat produced, H = V it∴ H=210×1⋅0×36004⋅2cal=180000calIf L be the latent heat of ice and m, the mass of melted ice, thenm L = 180000or m=180,00080g=2250g=2⋅25kgTalk to our academic expert!
Similar Questions
A resistor R is connected across a battery of emf 12 V. It observed that terminal potential differenceis 9 V and the power delivered to resistor is 18 W. Internal resistance of the battery ‘r’ and the resistance R are respectively
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