(a)
The total resistance of two wires.
(a)
Answer to Problem 24P
The answer is
Explanation of Solution
Given:
Length of wire is 10 m followed by
Formula used:
It is known that resistance:
Where,
The cross-sectional area:
Where,
Formula of radius:
Where,
Calculation:
By using the formula:
Put the value of
Substitute the given values for aluminium in the formula:
Substitute the given values for copper in the formula:
Now, add the resistance of each wire,
Conclusion:
The total resistance of two wires is
(b)
The current through the wire.
(b)
Answer to Problem 24P
Explanation of Solution
Given:
Length of wire is 10 m followed by
The total resistance of two wires is
Formula used:
Formula to calculate current:
Where,
Calculation:
Put the given values in the formula,
Conclusion:
The current through the wire is
(c)
The voltages across the aluminium part and the copper part.
(c)
Answer to Problem 24P
Voltage across the aluminium part,
Explanation of Solution
Given:
Resistance across the aluminium wire,
Resistance across the copper wire,
The current through the wire is
Formula used:
Ohm’s Law:
Where,
Calculation:
By using the formula,
The voltages across the aluminium part,
The voltages across the copper part,
Conclusion:
The voltages across the aluminium part and across the copper part:
Chapter 18 Solutions
Physics: Principles with Applications
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