What are the typical values of current through

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...a torch bulb, LED, small motor, buzzer, mains lamp, electric kettle? (in normal operation)

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if you have these things, they are usually located on the back or bottom or perhaps the manual guide
 
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Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
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