centre of gravity examples in real life
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When we place a pen at its mid point by our 1 finger it doesn't fall means its centre of gravity lies in that point so that the entire mg can be represented at that point only.
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From the graph, slope of wire A is greater.
slope=dydx=VIR=VI=slope
Hence wire A has greater resistance.
The heat produced by resistor is given by P=I2Rt.It is directly proportional to square of current passing through it , resistance and time for which the current passes through the conductor.Hence wire A will produce more heat.
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