NCERT Physics Class 12 Exemplar Ch 14 Semiconductor Electronics Materials Devices and Simple Circuits Part 4
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Long Answer
31 If each diode in Fig. has a forward bias resistance of and infinite resistance in reverse bias, what will be the values of the current?
Has a Forward Bias Resistance
Has a forward bias resistance
Ans:
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is zero as the diode in that branch is reverse bised. Resistance in the branch AB and EF are each
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As AB and EF are identical parallel branches, their effective resistance is
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Net resistance in the circuit
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Current
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As resistances of AB and EF are equal, and
Q 32 In the circuit shown in Fig., when the input voltage of the base resistance is, is zero and is also zero. Find the values of.
Find Currents
Find currents
Ans:
As , potential drop across is .
Since, potential drop across , i.e. is .
Q 33 Draw the output signals and in the given combination of gates (Fig.).
Draw the Output of Combination of Gates (Q).
Draw the output of combination of gates (Q).
Ans:
Output of Combination of Gates (Ans).
Output of combination of gates (Ans).