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  1. M

    Questions about Charging Speeds and Wattage

    sorry, I am not sure how to explain in correct physics terms I just want to understand how it is possible that a usb charger with an output capability of 2 amps can charge a device with an input capability of 1 amp significantly faster than a charger with an output capability of 1 amp? This is...
  2. M

    Questions about Charging Speeds and Wattage

    Ok, so that means that those websites are wrong then? It doesn't matter how high the output current is if the maximum current input stays the same? But how come people say their devices do charge faster if they use a charger with a higher output current? For example, I read people say their...
  3. M

    Questions about Charging Speeds and Wattage

    Hi, I'm not sure if this is a correct place to ask this, but i have a question about the charging speed for the usb chargers for phones and tablets. from what I have gathered, the device being charged is the one that pulls the current from the charger, so if a 1 amp input device is charged with...
  4. M

    Right Hand Rule for Magnetic Fields

    Hi, I am wondering if anyone here has heard of or can explain this variation of the right hand rule: Most websites i see tells you to point thumb in direction of current and curl the fingers, and the direction of the magnetic field is the direction you're curling. But my professor uses a weird...
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