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25 October, 07:18

What is the value of the energy (in Joules) stored by the mobile phone battery (capacity of 1.8 Ah), if it is rated at 3.7 V

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Answers (2)
  1. 25 October, 09:59
    0
    6.6 Joules

    Explanation:

    Energy = power * time

    = V*I*t

    = 3.7 * 1.8

    = 6.6 Joules
  2. 25 October, 10:33
    0
    E=23,976 J

    Explanation:

    Given that

    I = 1.8 Ah

    Voltage = 3.7 V

    We know that 1 h = 3600 s

    I = 1.8 x 3600 A. s

    I=6480 A. s

    The energy in Jules given as

    E = V. I

    We know that unit of V. I is Watts (J/s) and when multiple by seconds then we get Joules.

    E=3.7 x 6480 Watt. s

    E=23,976 J

    Therefore the energy in joule will be 23,976 J.
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