The Biot-Savart law

Exercise and reference answers

Questions

1. Question

   Biot-Savart gives the field due to a

   Choices

   1. Static charge
   2. Current element
   3. Magnet pole

   Correct choice

   Current element

2. Question

   The field dB depends on the element

   Choices

   1. dt
   2. dq
   3. dl

   Correct choice

   dl

3. Question

   It falls off with distance as

   Choices

   1. 1 over r cubed in the vector form
   2. r squared
   3. Linearly

   Correct choice

   1 over r cubed in the vector form

4. Question

   To get the total field you must

   Choices

   1. Take one point only
   2. Integrate over the conductor
   3. Divide by length

   Correct choice

   Integrate over the conductor

Instructions

Tap the chip that answers each prompt.

Explanation