(a)
The hottest resistor in the circuit.
(a)
Answer to Problem 55A
The hottest resistor in the circuit is
Explanation of Solution
Given:
The given circuit is shown below.
The voltage is
The resistance is
The resistance is
The resistance is
Formula used:
The expression for the power is,
Here,
Calculation:
The current
The power of
The power of
The maximum power will developed by the largest resistor. So, the hottest resistor in the circuit will be the one with larger value of resistance.
Conclusion:
Thus, the hottest resistor in the circuit having the resistance of
(b)
the coolest resistor in the circuit.
(b)
Answer to Problem 55A
The coolest resistor in the circuit having the resistance of
Explanation of Solution
Given:
The given circuit is shown below.
The voltage is
The resistance is
The resistance is
The resistance is
Formula used:
The expression for the power is,
Here,
Calculation:
From part (a),
The power of
The power of
The power of
The least power will developed by the smallest resistor.
Conclusion:
Thus, the coolest resistor in the circuit having the resistance of
(c)
The current in ammeter.
(c)
Answer to Problem 55A
The current in ammeter is
Explanation of Solution
Given:
The given circuit is shown below.
The voltage is
The resistance is
The resistance is
The resistance is
Formula used:
The expression for the current by Ohm’s law is,
Here,
Calculation:
The current in ammeter is,
Conclusion:
Thus, the current in ammeter is
(d)
The power supplied by the battery.
(d)
Answer to Problem 55A
The power supplied by the battery is
Explanation of Solution
Given:
The given circuit is shown below.
The voltage is
The resistance is
The resistance is
The resistance is
Formula used:
The expression for the power is,
Here,
Calculation:
From part (c), the current in ammeter is
The total resistance is,
The power supplied by the battery is,
Conclusion:
Thus, the power supplied by the battery is
Chapter 23 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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