A magnetic field of strength exerts a force on a charge,

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A magnetic field of strength

B

exerts a force on a charge,

q

, moving with a speed

v

, to make the charge move in a circular path of radius

r

. Which of the following statements about the time it takes for the charge to make one complete circle,

T

, is true? (1)

T

depends on

B

q

and

m

only. (2)

T

depends on

B

q

m

and

v

only. (3)

T

depends on

B

q

m

v

and

r

. (4)

T

depends on

B

v

and

r

only.