Question

A mobile charging adapter given with a brand new mobile with a battery capacity of 4000mAh , has the information of potential difference and current printed on it as input: 100-240 V ~ 50-60 Hz 0.5A output: 9.0 V, 1.67A or 5.0 V, 2.0A i) What are the possible potential differences provided by the adapter to charge the battery of any given mobile?
ii) Calculate the total amount of charges in the battery in terms of coulomb (C)
iii) How much energy is required to completely charge the battery if the output potential differences of the adapter are 9V and 5V.

Answer 1

Explanation:

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