MCQ
A charge $+ q$ is sent through a magnetic field. The force acting on it is maximum when the angle between the direction of motion of the charged particle and the magnetic field:
- A$0^\circ$
- B$45^\circ$
- ✓$90^\circ$
- D$180^\circ$
✓
Answer
Correct option: C.
$90^\circ$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Bohr's atom model assumes
For a colour of light the wavelength for air is $6000 Å$ and in water the wavelength is $4500 Å.$ Then the speed of light in water will be
→A hollow metal sphere of radius 5 cm is charged so that the potential on its surface is 10 V. The potential at the centre of the sphere is
In the following circuit $C_1=12 \mu F, C_2=C_3=4 \mu F$ and $C_4=C_5=2 \mu F$. The Charge stored in $C_3$ is. . . . . $\mu C$.
→By a monochromatic wave, we mean
Assertion : A current continues to flow in superconducting coil even after switch is off.
Reason : Superconducting coils show Meissner effect
We are able to obtain fairly large currents in a conductor because
The number of photons of wavelength $540 nm$ emitted per second by an electric bulb of power $100W$ is (taking $h =6 \times {10^{ - 34}}\,J{\rm{ - }}sec$)
→Heat of 80 J is produced in a conductor on passing a current of 2 A for 10 seconds. The resistance of conductor will be:
A metal block is exposed to beams of $X-$ray of different wavelength. $X-$rays of which wavelength penetrate most?
→