1. The relationship between electricity and magnetism can be seen in all of the following EXCEPT

a battery converts chemical energy into electrical energy

2. The strength of a magnet is _____________.

greatest at the poles

3. A magnet can be made by _______________.

heating an iron nail

4. When a bar magnet is broken in half, _____________.

both halves are magnets

5. Which determines the direction of the force on a current-carrying wire in a magnetic field?
I. direction of current in the wire
II. amount of current in the wire
III. direction of magnetic field

I and III only

6. All magnets are characterized with _____________.

a magnetic field around them

7. The total magnetic flux through a closed surface is _____________.

zero

8. A compass points to _____________.

geographic north

9. The motion of a charged particle under the action of a magnetic field alone is always motion with ______________.

constant speed

10. The magnetic force on a current-carrying conductor depends on the following EXCEPT

mass of the conductor

11. A current is flowing west along a power line. If we neglect the earth’s field, the direction of the magnetic field below it is

south

12. The magnetic field of a bar magnet most closely resembles of a

straight current carrying wire

13. What angle should a current-carrying wire make an angle with the magnetic field for the force to be maximum?

90 degrees

14. When a current-carrying wire is in uniform magnetic field with the direction of current the same as that of the field,

there is neither a force nor a torque on the wire

15. The field/s surrounding a moving electric charge

both electric and magnetic fields