Question

In: Physics

1. Charged particles moving in a magnetic field experience a force a in their direction of...

1.

Charged particles moving in a magnetic field experience a force

a

in their direction of travel.
b

opposite to their direction of travel.
c

perpendicular to their direction of travel.
d

That does not depend on their direction of travel.

2.

The unit for the magnetic field is the

a

newton.
b

joule per coulomb.
c

volt.
d

tesla.

3.

An electron (m = 9.11x10-31 kg, q = 1.60x10-19 C) is moving in a uniform magnetic field, perpendicular to the field. If the strength of the field is 0.250 T and the speed of the electron is 5.50x107 m/s, the radius of its path is

a

1.25x10-3 m.
b

798 m.
c

1.06x10-56 m.
d

9.43x1055 m.

4.

The magnetic field caused by a current-carrying wire

a

goes radially outward from the wire.
b

goes around the wire in circles.
c

goes parallel to the wire.
d

goes perpendicular to the wire.

Solutions

Expert Solution

In que 3, electeon is moving in magnetic field. So magnetic force act perpendicular to its motion, which causes circular motion.

And centripetal force required for circular motion is provided by magnetic force on it.

By equating both these forces,we can calculate the radius of the path.

genius_generous answered 1 year ago
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