A proton of mass 1 . 67 × 10 - 27 kg and charge 1 . 6 × 10 - 19 C is projected with a speed of 2 × 10 6 m s - 1 at an angle of 60 ° to the X -axis. If a uniform magnetic field of 0 . 104 Tesla is applied along Y - a x i s , the path of proton is-

a helix of radius = 0 . 1 m and time period 2 π × 10 - 7 s

a circle of radius = 0 . 2 m and time period π × 10 - 7 s

a circle of radius = 0 . 1 m and time period 2 π × 10 - 7 s

a helix of radius = 0 . 2 m and time period 4 π × 10 - 7 s

A particle of charge + q and m moving under the influence of a uniform electric field E i ^ , and a uniform magnetic field B k ^ follows a trajectory form P to Q as shown in the figure. The velocities of P and Q are v i ^ and- 2 v j ^ respectively. Which of the following statement (s) is/ are correct?

Rate of work done by both the fields at Q is zero.

Rate of work done by the electric field at P is zero

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 62

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A proton moving with a constant velocity passes through a region of space without any change in its velocity. If $E .$ and $B$ represent the electric and magnetic fields respectively, this region of space may have

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Important Questions on Electromagnetism

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 63

A particle of charge

- 16 \times 10^{- 18} C

moving with velocity

10 m s^{- 1}

along the

X

-axis enters a region where a magnetic field of induction

B

is along the

y -

axis, and an electric field of magnitude

10^{4} V / m

is along the negative

Z -

axis. If the charged particle continues moving along the

X -

axis, the magnitude of

B

is-

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 64

A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointed in the same direction-

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 68

A proton of mass

1.67 \times 10^{- 27} kg

and charge

1.6 \times 10^{- 19} C

is projected with a speed of

2 \times 10^{6} m s^{- 1}

at an angle of

60 °

to the

X

-axis. If a uniform magnetic field of

0.104

Tesla is applied along

Y - a x i s,

the path of proton is-

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 72

A particle of charge $+ q$ and $m$ moving under the influence of a uniform electric field $E \hat{i},$ and a uniform magnetic field $B \hat{k}$ follows a trajectory form $P$ to $Q$ as shown in the figure. The velocities of $P$ and $Q$ are $v \hat{i}$ and- $2 v \hat{j}$ respectively. Which of the following statement (s) is/ are correct?

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 78

A charged particle is released from rest in a region of steady and uniform electric and magnetic fields which are parallel to each other. The particle will move in a

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A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 8 - Electromagnetism>EXERCISE 8>Q 79

A circular loop of radius