(a)
Find the equivalent resistance.
(a)
Answer to Problem 73P
The equivalent resistance is
Explanation of Solution
The sum of individual resistance connected in series and reciprocal of resistance connected in parallel will give the equivalent resistance.
From the given circuit, the resistor
This resistance is in series with the
Substitute the value of
Conclusion:
Substitute,
Therefore, the equivalent resistance is
(b)
Find the current flows through
(b)
Answer to Problem 73P
The current flows through
Explanation of Solution
The emf is
Write the equation for current.
Here,
Conclusion:
Substitute
Therefore, the current flows through
(c)
Find the power dissipated in in the circuit.
(c)
Answer to Problem 73P
The power dissipated in the circuit is
Explanation of Solution
Write the equation for power dissipated.
Here,
Conclusion:
Substitute
Therefore, the power dissipated in the circuit is
(d)
Find the potential difference across
(d)
Answer to Problem 73P
The potential difference across
Explanation of Solution
Use the Kirchhoff’s loop rule to the left hand loop to determine the voltage drop.
Consider
Conclusion:
From Kirchhoff’s loop rule,
From the above equation solve for
Therefore, the potential difference across
(e)
Find the current flows through
(e)
Answer to Problem 73P
The current flows through
Explanation of Solution
Write the equation for potential difference.
Here,
Conclusion:
Substitute
Therefore, the current flows through
(f)
Find the power dissipated in
(f)
Answer to Problem 73P
The power dissipated in
Explanation of Solution
Consider the resistor
Conclusion:
Substitute
Therefore, the power dissipated in
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