Question

A wire has a mass of m = 10 gram and a length of L = 50.0 cm is suspended by a pair

of flexible springs in a uniform magnetic field of magnitude 0.50 T.

What are the magnitude and direction (left or right) of the

current required to remove the tension in the supporting springs?

g = 10 m/s^2

Lütfen birini seçin:

A. 4.0 A, left direction

B. 0.4 A, right direction

C. 2.5 A, right direction

D. 4.0 A, right direction

E. 0.4 A, left direction

What uniform magnetic field, applied perpendicular to a

beam of electrons moving at 1.30 x 10^(6) m/s, is required to make

the electrons travel in a circular arc of radius 0.350 m?

q = e = 1.6 x 10^(-19) C

m = 9.11 x 10^(-31) kg

Lütfen birini seçin:

A. 42.2 x 10^(-6) T

B. 4.2 x10^(-6) T

C. 2.1 x 10^(-6) T

D. 20.1 x 10^(-6) T

E. 21.1 x 10^(-6) T

A point particle has a charge 1.0 x 10^(-6) C and has velocity

v = (2.0 m/s)i + (3.0 m/s)j

moves through the uniform magnetic field

B = (0.30T)i - (0.15T)j

Find the force on the charge due to the magnetic field.

Lütfen birini seçin:

A. -1.2 x 10^(-6)N k

B. 1.2 x 10^(-6)N (i + j)

C. 1.2 x 10^(-6)N k

D. - 1.2 x 10^(-6)N (j + k)

E. 1.2 x 10^(-6)N (j +k)

The force experienced by a particle of charge q moving with a velocity v in a uniform magnetic field B is given by

F=q(vXB)

Statement I: If the angle between the vectors v and B is zero, then F is maximum.

Statement II: The vectors v and B can have any angle between them

Statement III: The vector F is perpendicular to both and v and B.

Lütfen birini seçin:

A. Statement III is true only

B. Statement I and II are true only

C. All the statements are true

D. Statement II and III are true only

E. Statement I and III are true only

Answer 1