\( V_{0} \) versus \( \mathrm{v} \) curve is a (a) straight line with slope \( =\phi_{0} \) (b) ...

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\( V_{0} \) versus \( \mathrm{v} \) curve is a
(a) straight line with slope \( =\phi_{0} \)
(b) straight line with slope \( =\phi_{0} / e \)
(c) straight line with slope \( =h / e \)
(d) straight line with zero slope
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