Reading the definitions back

Exercise and reference answers

Questions

1. Question

   The unit of resistance is the

   Choices

   1. volt
   2. coulomb
   3. ohm

   Correct choice

   ohm

2. Question

   Resistance R relates to length l and area A as

   Choices

   1. ρl/A
   2. ρA/l
   3. ρlA

   Correct choice

   ρl/A

3. Question

   Current density j equals

   Choices

   1. nq/v_d
   2. nqv_d
   3. qv_d/n

   Correct choice

   nqv_d

4. Question

   Which has the highest resistivity?

   Choices

   1. Copper
   2. Silicon
   3. Glass

   Correct choice

   Glass

Explanation