Judge these claims on magnetic force

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Two long parallel wires carrying current the same way attract each other.

2. Statement is true

   No

   Statement

   In a velocity selector the electric and magnetic forces push the same way.

3. Statement is true

   Yes

   Statement

   A charge moving along the field lines feels no magnetic force at all.

4. Statement is true

   Yes

   Statement

   The net force on a current loop sitting in a uniform field is zero.

5. Statement is true

   No

   Statement

   A faster particle takes longer to go once round its circular path.

6. Statement is true

   No

   Statement

   The field inside an ideal long solenoid depends on its cross section area.

Instructions

Tap true or false for each claim about the force a magnetic field puts on charges and currents.

Explanation