The motor effect

EasyMedium
1234
Question 2
Easy

An industrial sorting system uses an electromagnet to separate scrap metal on a conveyor belt.

a.

Which of the following changes would increase the magnetic field strength of this electromagnet?

  • Decrease the current flowing through the coil
  • Wrap a greater number of turns of wire around the core
  • Replace the iron core with a solid plastic core
[1]
b.

The current supplied to the electromagnet is modulated so that it oscillates with a frequency of 16 Hz16\text{ Hz}16 Hz. Calculate the period of this magnetic oscillation. Use the equation: period=1frequency\text{period} = \frac{1}{\text{frequency}}period=frequency1​

[2]

The motor effect Questions

  1. GCSE
  2. /Physics
  3. /The motor effect