Question 5 a) i. A piece of pencil lead is connected in series with an ammeter and a power supply. The power supply is turned on. After a few minutes, although the potential difference across the pencil lead does not change, the current in the circuit increases significantly. Explain why the current increases. ii. The current / in a length of aluminum of cross-sectional area A is given by the formula I nevA e is the charge on an electron. Show that the units on the left-hand side of the equation are consistent with those on the right-hand side.
Question 5 a) i. A piece of pencil lead is connected in series with an ammeter and a power supply. The power supply is turned on. After a few minutes, although the potential difference across the pencil lead does not change, the current in the circuit increases significantly. Explain why the current increases. ii. The current / in a length of aluminum of cross-sectional area A is given by the formula I nevA e is the charge on an electron. Show that the units on the left-hand side of the equation are consistent with those on the right-hand side.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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![Question 5
a)
i.
A piece of pencil lead is connected in series with an ammeter and
a power supply. The power supply is turned on. After a few
minutes, although the potential difference across the pencil lead
does not change, the current in the circuit increases significantly.
Explain why the current increases.
The current /in a length of aluminum of cross-sectional area A is
given by the formula I= nevA
ii.
e is the charge on an electron.
Show that the units on the left-hand side of the equation are
consistent with
those on the right-hand side.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F55761ddd-673a-4e91-aa48-b5dc4241bb1a%2F111804fb-c0e6-4184-928d-411a544c7699%2Fafz245c_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 5
a)
i.
A piece of pencil lead is connected in series with an ammeter and
a power supply. The power supply is turned on. After a few
minutes, although the potential difference across the pencil lead
does not change, the current in the circuit increases significantly.
Explain why the current increases.
The current /in a length of aluminum of cross-sectional area A is
given by the formula I= nevA
ii.
e is the charge on an electron.
Show that the units on the left-hand side of the equation are
consistent with
those on the right-hand side.
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