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The tag applies to electrical resistance and resistors. DO NOT USE THIS TAG for non-electrical resistance.

1 vote
2 answers
107 views

Why is lamp D off?

I understand the other lamps, but the answer for lamp d is that it is off as no current flows through it. I don't understand why? Please help.
Jabeaumes's user avatar
  • 523
8 votes
5 answers
3k views

Why does a drop in resistance lead to a drop in voltage?

I was working on this question which I know the answer to but I am still confused. I get that resistance is due to collisions on the atomic scale where the electrons' kinetic energy is transferred to …
Jabeaumes's user avatar
  • 523