DP Physics (first assessment 2025)

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Question 21M.2.SL.TZ2.6b

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Date May 2021 Marks available [Maximum mark: 3] Reference code 21M.2.SL.TZ2.6b
Level SL Paper 2 Time zone TZ2
Command term Calculate Question number b Adapted from N/A
b.
[Maximum mark: 3]
21M.2.SL.TZ2.6b
(b)

Calculate the internal resistance of the photovoltaic cell for the maximum intensity condition using the model for the cell.

 

[3]

Markscheme

ALTERNATIVE 1
pd dropped across cell =6.5 «V»✓

internal resistance =6.50.9 ✓

7.2 «Ω»✓


ALTERNATIVE 2

ε=I(R+r) so ε=V+Ir ✓

21.0=14.5+0.9×r ✓

7.2 «Ω» ✓


Alternative solutions are possible

Award [3] marks for a bald correct answer

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