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Physics · Electric Charges and Fields
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Physics · Electric Charges and Fields
A spherical metal body \( A \), initially neutral, gains protons from an ion beam at a steady rate of \( n_1 = 5 \times 10^{11} \text{ protons/second} \) while losing electrons at a steady rate of \( n_2 = 3 \times 10^{11} \text{ electrons/second} \). The time required for body \( A \) to accumulate a net positive charge of \( 1.28\,\mu\text{C} \) is:
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In an isolated electrostatics setup, two initially neutral insulating bodies \( X \) and \( Y \) are rubbed together, resulting in the transfer of \( 3.125 \times 10^{13} \) electrons from \( X \) to \( Y \). Simultaneously, inside the same isolated system, a neutral particle decays into a proton, an electron, and a neutrino. The net final charge on body \( Y \) and the total net charge of the entire isolated system are, respectively:
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Consider the following statements regarding electric charge:\n Statement I: At the macroscopic scale, the quantisation of electric charge has no practical significance and charge can be treated as continuous.\n Statement II: A typical macroscopic charge of \( 1\,\mu\text{C} \) contains an enormous number of elementary charges (around \( 10^{13} \) times \( e \)), making the discrete grainy nature of charge unnoticeable.\nWhich of the following options is correct?
Read answer →Physics · Electric Charges and Fields
