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let the weight of zinc be 7x and copper 9x
total weight of alloy=8kg
ATQ, 7x+9x=8
16x=8
x=1/2 0r 0.5kg
weight of copper=9x =9(0.5)= 4.5 kg
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A rectangular coil facing the observer has field directed towards the observer ,outside the coil then state the direction of current in the coil. plz tell me tomorrow is my exam.
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