anonymous
  • anonymous
A current of 0.2 A flows through a wire whose ends are at a p.d of 15V Find resistance heat produced in 1 min
Physics
chestercat
  • chestercat
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anonymous
  • anonymous
Michele_Laino
  • Michele_Laino
we have to apply the Ohm's law, so the requested resistance R is: \[\Large R = \frac{V}{I} = \frac{{15}}{{0.2}} = ...ohms\]
rvc
  • rvc
Yes V = IR

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anonymous
  • anonymous
75?
Michele_Laino
  • Michele_Laino
correct!
rvc
  • rvc
Yep all the best
Michele_Laino
  • Michele_Laino
the heat energy E produced, is given by the subsequent formula: \[\Large E = VI\Delta t = 15 \times 0.2 \times 1 \times 60 = ...Joules\]
anonymous
  • anonymous
180J
Michele_Laino
  • Michele_Laino
that's right!
rvc
  • rvc
yay
anonymous
  • anonymous
Thanks for all the help.
Michele_Laino
  • Michele_Laino
:) @rvc
Michele_Laino
  • Michele_Laino
anonymous
  • anonymous

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