Dynamic resistance
\(=\)\(\frac{dV}{dl}\)
\(⇒\) \(r_1 = \frac{2.1 - 2 \, \text{k}\Omega}{10^{-5}}\)
and \(r_2 = \frac{4.2 - 4 \, \text{k}\Omega}{250 - 200}\)
\(⇒ \)\(r1 :r2 = 5 : 1.\)
So,Correct option is (B)
In the A.C. circuit given below, voltmeters $ V_1 $ and $ V_2 $ read 100 V each. Find the reading of the voltmeter $ V_3 $ and the ammeter A.
An alternating voltage is given by \( e = 8 \sin(628.4 t) \).
Find:
(i) Peak value of e.m.f.
(ii) Frequency of e.m.f.
(iii) Instantaneous value of e.m.f. at time \( t = 10 \, {ms} \)
20 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium iodide solution is _____ M. (Nearest Integer value) (Given : Na = 23, I = 127, Ag = 108, N = 14, O = 16 g mol$^{-1}$)
A P-N junction is an interface or a boundary between two semiconductor material types, namely the p-type and the n-type, inside a semiconductor.
in p-n junction diode two operating regions are there:
There are three biasing conditions for p-n junction diode are as follows: