In a photoelectric experiment under conditions of saturation current, we consider two different cross-section A and B as shown. Here, v A and v B represent the average speed of electrons at the two cross-sections.

Question

In a photoelectric experiment under conditions of saturation current, we consider two different cross-section A and B as shown. Here, v A and v B represent the average speed of electrons at the two cross-sections., i A > i B, v A = v B, i A = i B, v A > v B

MARKS App · Accepted Answer

Current at any cross-section is equal to the number of electrons coming out of cathode and this is also equal to the number of electrons entering each area per unit time. Also v dA = v dB , i.e, drift speeds are equal.

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