Practice Summary (4.11) - MOVING CHARGES AND MAGNETISM

Practise this section

8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the Lorentz force equation?
Show hintHide hint
It involves electric and magnetic fields.
Question 2.
State the Biot-Savart Law.
Show hintHide hint
Think about how current influences magnetic fields.
3Question 3.
What does the Lorentz force depend on?
- Charge and velocity
- Magnetic and electric fields
- Both of the above
Show hintHide hint
Think about all the variables in the definition.
4Question 4.
Ampere's Law relates magnetic fields to which quantity?
- True
- False
Show hintHide hint
Recall the formula of Ampere's Law.
Question 5.
Calculate the magnetic field from a 10 A current flowing through a wire at 0.2m distance using the Ampere's Law.
Show hintHide hint
Remember the equation for B around a long wire.
Question 6.
Discuss the implications of the Lorentz force on the design of electric motors.
Show hintHide hint
Think about how currents create movement in motors.

4 more questions in this section. Enroll free to practise them all.