Author Question: Suppose a long, straight wire carries a current upwards. A short distance directly east of the wire, ... (Read 93 times)

kellyjaisingh · **on:** Jul 28, 2018

Suppose a long, straight wire carries a current upwards. A short distance directly east of the wire, a negatively charge particle is moving upwards parallel to the wire. In what direction is the magnetic force on the particle?
1.The force is upwards.
2.The force is eastward.
3.The force is westward.
4.Either there is no force or its direction is not given among these choices.

Question 2

Solenoid 1 has 100 turns and is 10.0 cm long. Solenoid 2 has 200 turns and is 20.0 cm long. If a current of 0.50 A is carried by 1, what current must 2 carry so that it would produce a magnetic field at its center equal to that in 1?
1.0.25 A
2.0.50 A
3.1.00 A
4.4.00 A