Solution Found!
Consider a rectangular block of metal of height A, width
Chapter 21, Problem 23P(choose chapter or problem)
Consider a rectangular block of metal of height A, width B, and length C, as shown in Figure 21–28. If a potential difference V is maintained between the two \(A X B \) faces of the block, a current \(I_{A B}\) is observed to flow. Find the current that flows if the same potential difference V is applied between the two \(B X C\) faces of the block. Give your answer in terms of \(I_{A B}\).
Equation Transcription:
Text Transcription:
A X B
IAB
B X C
IAB
Questions & Answers
QUESTION:
Consider a rectangular block of metal of height A, width B, and length C, as shown in Figure 21–28. If a potential difference V is maintained between the two \(A X B \) faces of the block, a current \(I_{A B}\) is observed to flow. Find the current that flows if the same potential difference V is applied between the two \(B X C\) faces of the block. Give your answer in terms of \(I_{A B}\).
Equation Transcription:
Text Transcription:
A X B
IAB
B X C
IAB
ANSWER:
Step 1 of 3
Here we need to find the current flowing through the two faces of the block.
When a potential difference is applied across the faces , we have the resistance and applied voltage as,
Resistance is given by,
Where is the resistivity of the metal.
Using ohm’s law we have,
Combining above equations,
……..1