MCQ
Choose the correct statement
  • A
    It is possible for a current loop to stay without rotating in a uniform magnetic field
  • B
    If a uniform magnetic field exists in a cubical region and zero outside then it is not possible to project a charged particle from outside into the field so that it describes a complete circle in the field
  • C
    A moving charged particle can be accelerated by a magnetic field
  • All of these

Answer

Correct option: D.
All of these
d
(d)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A flexible wire bent in the form of a circle is placed in a uniform magnetic field perpendicular to the plane of the coil. The radius of the coil changes as shown in figure. The graph of induced $emf$ in the coil is respresented by
To distinguish between formaldehyde and acetaldehyde, we require
The frequency of $ac$ mains in India is.......$Hz$
$1\, Curie $ is equal to
An ideal gas with adiabatic exponent $(\gamma=1.5)$ undergoes a process in which work done by the gas is same as increase in internal energy of the gas. The molar heat capacity of gas for the process is -
A $300\  kg$ crate is dropped vertically onto a conveyor belt that is moving at $1.20\  m/s$. A motor maintains the belt's constant speed. The belt initially slides under the crate, with a coefficient of friction of $0.400$. After a short time, the crate is moving at the speed of the belt. During the period in which the crate is being accelerated, find the work done by the motor which drives the belt :- ................. $\mathrm{J}$
A sealed container with negligible coefficient of volumetric expansion contains helium (a monoatomic gas). When it is heated from $300\, K$ to $600\, K,$ the average $K.E.$ of helium atoms is
$I-V$ characteristic of a copper wire of length $L$ and area of cross-section $A$  is shown in figure. The slope of the curve becomes
The diagram shows three capacitors with their capacitances and with breakdown voltages. What should be the maximum value of external $emf$ of source such that no capacitor breaks down
A transistor is operated in $CE$ configuration at $V_{c c}=2 V$ such that a change in base current from $100 \,\mu A$ to $200 \,\mu A$ produces a change in the collector current from $9 mA$ to $16.5 mA$. The value of current gain, $\beta$ is .........