Moving Charges and Magnetism

Quiz
•
Physics
•
12th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
In a certain region of space, electric field
E and magnetic field
B are perpendicular to each other. An electron enters perpendicularly to both the fields and moves undeflected. The velocity of electron is
E/B
B/E
E x B
E.B
Tags
NGSS.HS-PS2-5
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A deuteron of kinetic energy 50 keV is describing a circular orbits of radius 0.5 m in a plane perpendicular to the magnetic field B. The kinetic energy of the proton that describes a circular orbit of same radius and inside same B is
25 keV
50 keV
200 keV
100 keV
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A rectangular coil ABCD is placed near a long straight current carrying straight wire as shown. What is the net force on the rectangular coil?
25 x 10-7 N towards the wire
25 x 10-7 N away from the wire
35 x 10-7 N, towards the wire
35 x 10-7 N, away from the wire
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
To convert a moving coil galvanometer into on ammeter of given range, we must connect:
A suitable low resistance in series
A suitable low resistance in parallel
A suitable high resistance in parallel
A suitable high resistance in series
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Two wires of same length are shaped into a square and a circle if they carry same current, ratio of magnetic moment is :
2 : pi
pi: 2
pi: 4
4:pi
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Current sensitivity of a galvanometer can be increased by decreasing :
Magnetic field B
number of turns N
torsional constant K
Area A
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An electric current passes through a long straight copper wire. At a distance 5 cm from the straight wire, the magnetic field is B. The magnetic field at 20 cm from the straight wire would be
B/6
B/4
B/3
B/2
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
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