Is there electric circuit in mobile? How does mobile phone get electric energy?
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Yes, there is electric circuit in mobile. Mobile gets its energy from the battery inside that can be charged with the help of a adapter.
Battery requires direct current or DC for charging.
Mobile phone charger use switched mode power supply to convert AC supply of 120/24,50/60Hz to into DC supply such as 5V, 1.6A where the, input voltage from AC mains is directly rectified and filtered using a capacitor.
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