MCQ
Assertion : Zener diode works on a principle of breakdown voltage.
Reason : Current increases suddenly after breakdown voltage.
  •  If both assertion and reason are true and the reason is the correct explanation of the assertion.
  • B
     If both assertion and reason are true but reason is not the correct explanation of the assertion.
  • C
     If assertion is true but reason is false.
  • D
     If the assertion and reason both are false.

Answer

Correct option: A.
 If both assertion and reason are true and the reason is the correct explanation of the assertion.
 If both assertion and reason are true and the reason is the correct explanation of the assertion.

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 capacitor of capacitance $100\  \mu \mathrm{F}$ is charged to a potential of $12  \mathrm{~V}$ and connected to a $6.4 \ \mathrm{mH}$ inductor to produce oscillations. The maximum current in the circuit would be :
A horse-shoe magnet is an example of $.......$
A coil having $N$ turns is wound tightly in the form of a spiral with inner and outer radii $a$ and $b$ respectively. When a current $i$ passes through the coil, the magnetic field at the centre is
For $VHF$ signal broadcasting, $km ^{2}$ of maximum service area will be covered by an antenna tower of height $30\, m$, if the receiving antenna is placed at ground. Let radius of the earth be $6400\, km$. (Round off to the Nearest Integer) (Take $\pi$ as $3.14$)
Is the ionisation energy of an isolated free atom different from the ionisation energy Eg for the atoms in a crystalline lattice
In a semiconductor diode, the reverse biased current is due to drift of free electrons and holes caused by
In a common emitter transistor circuit, the base current is $40 \,\mu A$, then $V_{B E}$ is .......... $V$
In a thermocouple, the temperature that does not depend on the temperature of the cold junction is called
Voltage and current in an $ac$ circuit are given by $V = 5\sin \,\left( {100\pi t - \frac{\pi }{6}} \right)$ and $I = 4\sin \,\left( {100\pi t + \frac{\pi }{6}} \right)$
Assertion : The resistance of super-conductor is zero.
Reason : The super-conductors are used for the transmission of electric power.