Skip to main content

SSC JE Previous Year Question Papers with Solutions

 

Question: Determine the separation between the plates (in mm) of a parallel plate capacitor placed in air, when the area of the plates is 0.002 sq. meter, the voltage of the battery connected to this parallel plate capacitor is 4 V and the charge stored on the plates is 16 pC.

Answer:

We know that C = Q/V

or, C=(16*10^(-12)) / 4

or, C = 4*10^(-12)

Capacitance between two parallel plates is calculated as, C = €A/d

Where, € = 8.854*10^(-12)
A = Area of plate
d = Distance between plates

Now, d = €A/C

or, d = (8.854*10^(-12)*0.002) / (4*10^(-12))

or, d = 4.4 mm

Next>>
<<Previous

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

MATLAB code for ask fsk and psk

Visit Main Website [Click Here ↗]   MATLAB Script %%% Code starts here %%% clc; clear all; close all; carrier_frequency=5; %Hz carrier_frequency2=7; %Hz This will be utilized for FSK's second carrier x=[1 0 0 1 1 0 0 1] % input signal ; length=size(x,2);   i=1; while i<length+1      t = i:0.001:i+1;     if x(i)==1        ask=sin(2*pi*carrier_frequency*t);        fsk=sin(2*pi*carrier_frequency*t);        psk=sin(2*pi*carrier_frequency*t);     else         ask=0;         fsk=sin(2*pi*carrier_frequency2*t);         psk=sin(2*pi*carrier_frequency*t+pi);     end              subplot(3,1,1);     plot(t,ask);     hold on;     grid on;     axis([1 10 -1 1]);  title('Amplitude Shift Key')     subplot(3,1,2);     plot(t,fs...
Post a Comment
Read more

MATLAB code for QAM constellation

  Visit Main Website [Click Here ↗] MATLAB Script %%% Code starts here %%% clc;clear all;close all; M = 4;  % Number of levels after quantization / size of signal constellation k = log2(M);  % Number of bits per symbol rng(1)  %assaining the value of seed integer N =5000;  % Number of bits to process dataIn = randi([0 1],1,N);   % Generating randon bits dataInMatrix = reshape(dataIn,length(dataIn)/k,k); % Reshape data into binary k-tuples, k = log2(M) dataSymbolsIn = bi2de(dataInMatrix);  % Convert binary to decimal for n= 1:N/k     if dataSymbolsIn(n)==0         QAM(n)= complex(1,1);     elseif dataSymbolsIn(n)==1         QAM(n)= complex(-1,1);     elseif dataSymbolsIn(n)==2         QAM(n)= complex(1,-1);     else         QAM(n)= complex(-1,-1);     end    end display(dataIn,'First fifty bits'); display(QAM,'...
Post a Comment
Read more

SSC Previous Year Question Papers with Solutions - (4)

  Q. The computer program that converts assembly language to machine language is called ............. 1) Complier 2) Interpreter 3) Assembler 4) Comparator Answer: Option 3 Q. In which communication mode, data can be transmitted in both directions at same time? 1) Simplex 2) Full duplex 3) Half duplex 4) Multiplex Answer: Option 2 Next>> <<Previous Go back
Post a Comment
Read more