True or false about induction

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A steady magnetic flux induces no emf.

2. Statement is true

   Yes

   Statement

   Lenz's law fixes the polarity of the induced emf.

3. Statement is true

   No

   Statement

   The induced current assists the change that made it.

4. Statement is true

   No

   Statement

   Moving a magnet into a coil takes no work at all.

5. Statement is true

   Yes

   Statement

   Inductance depends on the geometry of the coil.

Instructions

Decide whether each statement is true or false.

Explanation