ametal of mass 0.6kg is heated by an electric heater connected to 15v batter when the ammeter reading is 3A its tempeeature rises feom 20c t

Question

ametal of mass 0.6kg is heated by an electric heater connected to 15v batter when the ammeter reading is 3A its tempeeature rises feom 20c to 85c in 10 minutes calculate the s.h.c of metal cylinder​

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Orla Orla 5 years 2021-08-06T19:43:51+00:00 1 Answers 36 views 1

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  1. Eirian
    0
    2021-08-06T19:45:00+00:00
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    Answer:

    692 J/kg/°C

    Explanation:

    Electric energy added = amount of heat

    Power × time = mass × SHC × increase in temperature

    Pt = mCΔT

    (15 V × 3 A) (10 min × 60 s/min) = (0.6 kg) C (85°C − 20°C)

    C = 692 J/kg/°C

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