Explanation:
The given data is as follows.
Speed of the bullet (v) = 500 m/s
Distance during one RC time constant (d) = 1 mm = [tex]1 \times 10^{-3} m[/tex]
Capacitance (C) = 600 [tex]\mu F[/tex] = [tex]600 \times 10^{-6} F[/tex]
Hence, formula for speed of the bullet is as follows.
v = [tex]\frac{d}{t}[/tex]
or, t = [tex]\frac{d}{v}[/tex]
Time constant for RC circuit is as follows.
t = RC
R = [tex]\frac{t}{C}[/tex]
= [tex]\frac{d}{vC}[/tex]
= [tex]\frac{1 \times 10^{-3}}{500 \times 600 \times 10^{-6}}[/tex]
= [tex]3.33 \times 10^{-3} ohm[/tex]
Thus, we can conclude that resistance in the flash tube is [tex]3.33 \times 10^{-3} ohm[/tex].
