(a)
The resistors with maximum current.

Answer to Problem 5TP
Explanation of Solution
Given:
Parallel combination of two
Source voltage =
Calculations:
With the given information, following circuit diagram can be drawn:
Here, the resistors
The resistor which provides the maximum current is
Conclusion:
Thus,
(b)
The resistor with maximum voltage drop.

Answer to Problem 5TP
Each of the resistor connected in parallel have the maximum voltage drop.
Explanation of Solution
Given:
Parallel combination of two
Source voltage =
Calculations:
With the given information, following circuit diagram can be drawn:
Here, the resistors
To find the voltage drop in the above circuit, compare the voltage across of
So, for finding the voltage drop, find the equivalent resistance separately as follows:
Conclusion:
Thus, the equivalent resistance of
(c)
The power dissipated in each of the resistor and total power dissipated in all resistor.

Answer to Problem 5TP
20 W in each
Output power source = 144 W.
Yes, they are equal as per law of conservation of energy.
Explanation of Solution
Given:
Parallel combination of two
Source voltage =
Calculations:
With the given information, following circuit diagram can be drawn:
Here, the resistors
The voltage source is
To find the power dissipated in each of the resistor and the total power dissipated in each of the resistor, follow some steps one by one as below:
- Find the equivalent resistance and then find the total current.
- Voltage across parallel combination of resistance.
- Calculate the power dissipated in each resistor are:
- Total power dissipated in all the resistor.
- Find the total power output of the source as follows:
Conclusion:
The power dissipated of all the resistor and the total power output source are equal by the law of conservation of energy.
(e)
The values of all the resistors and the source voltage are doubled.

Answer to Problem 5TP
No effect.
Explanation of Solution
Given:
Parallel combination of two
Source voltage =
Calculations:
With the given information, following circuit diagram can be drawn:
Here, the resistors
If the values of all the resistors and the source voltage are doubled, then there would be no effect on the current.
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Chapter 21 Solutions
COLLEGE PHYSICS
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