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The resistance between \(A\) and \(B\) is
           
1. \(100~\Omega\) if \(V_A>V_B\) and \(200~\Omega\) if \(V_A<V_B\)
2. \(100~\Omega\) if \(V_A<V_B\) and \(200~\Omega\) if \(V_A>V_B\)
3. \(100~\Omega\)
4. \(200~\Omega\)

Subtopic:  PN junction |
 75%
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In half-wave rectification, if the input frequency is \(60\) Hz, the output frequency will be:
1. \(120\) Hz 2. zero
3. \(30\) Hz 4. \(60\) Hz
Subtopic:  Rectifier |
 68%
From NCERT
NEET - 2022
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As the temperature increases, the electrical resistance:
1. decreases for conductors but increases for semiconductors.
2. increases for both conductors and semiconductors.
3. decreases for both conductors and semiconductors.
4. increases for conductors but decreases for semiconductors.
Subtopic:  Energy Band theory |
 75%
From NCERT
NEET - 2022
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The truth table for the given logic circuit is:
          
1.
\(A\) \(B\) \(C\)
\(0\) \(0\) \(0\)
\(0\) \(1\) \(1\)
\(1\) \(0\) \(0\)
\(1\) \(1\) \(1\)
2.
\(A\) \(B\) \(C\)
\(0\) \(0\) \(0\)
\(0\) \(1\) \(1\)
\(1\) \(0\) \(1\)
\(1\) \(1\) \(0\)
3.
\(A\) \(B\) \(C\)
\(0\) \(0\) \(1\)
\(0\) \(1\) \(0\)
\(1\) \(0\) \(0\)
\(1\) \(1\) \(1\)
4.
\(A\) \(B\) \(C\)
\(0\) \(0\) \(1\)
\(0\) \(1\) \(0\)
\(1\) \(0\) \(1\)
\(1\) \(1\) \(0\)
Subtopic:  Logic gates |
 61%
From NCERT
NEET - 2022
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The output of the logic circuit shown is equivalent to a/an:
        
1. \(\text{OR}\) gate
2. \(\text{NOR}\) gate
3. \(\text{AND}\) gate
4. \(\text{NAND}\) gate

Subtopic:  Logic gates |
 73%
From NCERT
NEET - 2022
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The circuit represents a full wave bridge rectifier when switch \(S\) is open. The output voltage \((\text V_0)\) pattern across \(R_L\) when \(S\) is closed:

1.   2.
3. 4.
Subtopic:  Rectifier |
From NCERT
NEET - 2022
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Given below are two statements: 
Assertion (A): The value of current through \(\mathrm{p\text-n}\) junction in the given figure will be \(10~\text{mA}.\)
 
Reason (R): In the above figure, \(\mathrm{p\text-}\)side is at a higher potential than \(\mathrm{n\text-}\)side.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  PN junction |
From NCERT
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The diode used in the circuit shown in the figure has a constant voltage drop of \(0.5\) V at all currents and a maximum power rating of \(100~\text{mW.}\) What should be the value of the resistor \(R,\) connected in series with the diode for obtaining maximum current?
1. \(1.5~\Omega\) 2. \(5~\Omega\)
3. \(6.67~\Omega\) 4. \(200~\Omega\)
Subtopic:  PN junction |
 67%
From NCERT
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Given below are two statements: 
Assertion (A): The temperature coefficient of resistance is positive for metals and negative for \(\mathrm{p\text-}\)type semiconductors.
Reason (R): The effective charge carriers in metals are negatively charged whereas in \(\mathrm{p\text-}\)type semiconductors, they are positively charged.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Energy Band theory |
 55%
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Two ideal diodes are connected in the network as shown in the figure. The equivalent resistance between \(A\) and \(B\) is:
        
1. \(15~\Omega\)
2. \(25~\Omega\)
3. \(35~\Omega\)
4. \(45~\Omega\)
Subtopic:  PN junction |
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