Author Question: How many turns should a 10-cm long solenoid have if it is to generate a 1.5 10-3 T magnetic field ... (Read 33 times)

2125004343 · **on:** Jul 29, 2018

How many turns should a 10-cm long solenoid have if it is to generate a 1.5 10-3 T magnetic field on 1.0 A of current?

A)

12
B)

15
C)

120
D)

1200
E)

3200

Question 2

A straight wire carries a 12-A current eastward and a second straight wire carries a 14-A current westward. The wires are separated by a distance of 42 cm. The force per unit length on the wire carrying 12 A is

A)

8.0 10-5 N/m.
B)

5.1 10-7 N/m.
C)

5.1 10-4 N/m.
D)

5.1 10-6 N/m.
E)

8.0 10-7 N/m.