Current, voltage and resistance

Question 5 of 10

A resistor has a resistance of 2 when

  1. a current flow of 1A produces a p.d. of 2V across its ends
  2. a voltage flow of 2V produces a current of 2A across its ends
  3. a current flow of 2A produces a p.d. of 2V across its ends
  4. a voltage flow of 1V produces a current of 2A across its ends
1 2 3 4


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