(a)
To find the voltmeter reading.
(a)
Answer to Problem 71A
The voltmeter reading is
Explanation of Solution
Given:
The figure:
Calculation:
As per problem,
Consider the given figure
The diodes are forward-biased (positive terminal of the battery is connected to the p-side and d the negative terminal is connected to the n-side)
The voltage drop across a silicon diode is
Hence, the voltmeter connected across the parallel diode circuit reads
Conclusion:
The voltmeter reading is
(b)
To find the reading of ammeter
(b)
Answer to Problem 71A
The reading of the ammeter
Explanation of Solution
Given:
The figure:
Calculation:
The voltage drop across the two diodes in series is
Such small voltage is not enough to turn on the two diodes.
Therefore, current through the diodes are
Conclusion:
The reading of the ammeter
(c)
To find the reading of ammeter
(c)
Answer to Problem 71A
The reading of the ammeter
Explanation of Solution
Given:
The figure:
Formula used:
From ohm’s law:
Calculation:
As per the circuit given,
The voltage drop across the diode to which
Supply voltage,
The resistance of the resistor in the circuit,
Use the above stated formula to get current
Conclusion:
Thus, the reading of the ammeter
Chapter 29 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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