A charged particle moves along the positive X-axis in a uniform magnetic B which is directed parallel to - Physics - Semiconductor Electronics Materials Devices And Simple Circuits

Question

A charged particle moves along the positive X-axis in a
uniform magnetic
‘B’ which is directed parallel to the positive
Y-axis
(i) In which direction would the Lorentz force act for an
electron?
(ii) What will be the path of the charged particle?
(iii) Draw the path of the charged particle if it has a
velocity component
along ‘B’
Z Y
x x x x x x x
x x x B x x x
x x x x x x x
x x x x x x x X
3
20 Which part of the electromagnetic spectrum is suitable for
RADAR
systems used in aircraft navigation?
A parallel plate capacitor of capacitance 2 μF produces an
instantaneous
displacement current of 1 mA in the space between its plates
What
should be the rate of change of potential difference
required?
pleaaasseee ans

Jyoti Pant · Accepted Answer

Answers: 1-When a charged particle of charge q while moving with velocity v is subjected to a magnetic field B,it experiences Lorentz force given by $\vec{F} = q (\vec{v} \times \vec{B}) A s \vec{v} i s a l o n g x a x i s a n d \vec{B} i s a l o n g y a x i s, t h e n (\vec{v} \times \vec{B}) i s a l o n g p o s i t i v e z a x i s i f q i s p o s i t i v e (a c c o r d i n g t o r i g h t h a n d s c r e w r u l e o r r i g h t h a n d t h u m b r u l e) a n d (\vec{v} \times \vec{B}) i s a l o n g n e g a t i v e z a x i s i f q i s n e g a t i v e i e d i r e c t i o n o f L o r e n t z f o r c e o n p o s i t i v e c h \arg e i s a l o n g p o s i t i v e z a x i s a n d o n n e g a t i v e c h \arg e i s a l o n g n e g a t i v e z a x i s$ 2-Microwaves are suitable for RADAR systems used in aircraft navigation 3- Given that , $C = 2 μ F = 2 \times 10^{- 6} F I_{d} = 1 m A = 1 \times 10^{- 3} A$ Rate of change of potential difference $\frac{d V}{d t} = \frac{I_{d}}{C} = \frac{1 \times 10^{- 3}}{2 \times 10^{- 6}} = 500 V$ Hope now you can solve rest of the questions