MCQ
Electron volt is a unit of
  • A
    Potential
  • B
    Charge
  • C
    Power
  • Energy

Answer

Correct option: D.
Energy
d
(d) The electron volt (symbol $ev$ also written electronvolt) is a unit of energy equal to approximately $1.602 \times 10 ^{-19}$  joule $(SI$ unit $J).$

By definition, it is the amount of energy gained by the charge of a single electron moved across an electric potential difference of one volt.

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

An electric dipole of moment p is placed at the origin along the x-axis. The electric field at a point P, whose position vector makes an angle θ with the x -axis, will make an angle ..... with the x -axis, where tanα = $\frac{1}{2} \tan \theta$ 
Out of the following statements which is not correct
In a parabola spectrograph, the velocities of four positive ions $P,Q,R$ and $S$ are $v_1$, $v_2$, $v_3$ and $v_4$ respectively
If $_i{\mu _j}$ represents refractive index when a light ray goes from medium $i$ to medium $j,$ then the product $_2{\mu _1} \times {\,_3}{\mu _2} \times {\,_4}{\mu _3}$ is equal to
A step-down transformer is connected to 2400 volts line and 80 amperes of current is found to flow in output load. The ratio of the turns in primary and secondary coil is 20 : 1. If transformer efficiency is 100%, then the current flowing in primary coil will be
The near point of a hypermetropic person is $75\, cm$ from the eye. What is the power of the lens required to enable the person to read clearly a book held at $25\, cm$ from the eye?
A zener diode in the circuit shown has a knee current of $5\,mA$ and a maximum allowed power dissipation of $300\,mW$ . What are the minimum and maximum load currents that can be drawn safely from the circuit, keeping the output voltage $V_0$ constant at $6\,volts$ ?
The charge of an electron is $1.6 × 10^{-19}\,C$. How many electrons strike the screen of a cathode ray tube each second when the beam current is $16\,mA$
Cutoff wavelength of $X-$rays coming from a Coolidge tube depends on the:
Which of the following waves have the maximum wavelength