+91-93193 64476
FlagBACK
Flag Magnetism> An electron accelerated by 200 V, enters ...
question mark

An electron accelerated by 200 V, enters in magnetic field. If its velocity is 100 m/s, then (e/m) for it will be.
(A) 1.75 * 10^10
(B) 1.75 * 10^11
(C) 1.75 * 10^9
(D) 1.75 * 10^6

mahmood , 7 Years ago
Grade 12th pass
anser 2 Answers
Vikas TU
The kinetic energy would be after accelerateed by 200 V would be:
0.5*mv^2 = eV
0.5*v^2/V = e/m
e/m = (0.5*100^2)/200 => 25.
 
Last Activity: 7 Years ago
Asha
According to the measurement by Thomson, the value of e/m is 1.77*10^11 C/kg. So without calculation we can say the value 
Last Activity: 4 Years ago
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Other Related Questions on magnetism

question mark
Four long co-axial thin walled cylindrical conductor A, B, C and D have radii R. 2R 3R and 4R respectively. A and C carry current I and 31 respectively to plane of paper on the other hand, B and D carry and 41 respectively outward to plane of paper. Then 21
magnetism
1 Answer Available

Last Activity: 3 Years ago

question mark
I need solution of these questions.............................Magnetic effect of current
magnetism
1 Answer Available

Last Activity: 4 Years ago

question mark
A freely suspended iron rod does not point at N-S directions alwalys .why
 
 
magnetism
1 Answer Available

Last Activity: 4 Years ago

question mark
What is magnetic entropy change? For my knowledge, I know entropy is randomness or disorder. So here that magnetic refers to the magnetic dipole moments?
magnetism
1 Answer Available

Last Activity: 4 Years ago

question mark
Derive the relation between magnetic field intensity (H) and magnetization (M) for a magnetic material placed in a magnetizing field. 
magnetism
1 Answer Available

Last Activity: 4 Years ago