Last Updated On 16-03-2023 - By Jeesha Sara
We are able to obtain fairly large currents in a conductor because
a)
The electron drift speed is usually very large
b)
The number density of free electrons is very high and this can compensate for the low values of the electron drift speed and the very small magnitude of the electron charge
c)
The number density of free electrons as well as the electron drift speeds are very large and these compensate for the very small magnitude of the electron charge
d)
The very small magnitude of the electron charge has to be divided by the still smaller product of the number density and drift speed to get the electric current
We are able to obtain fairly large currents in a conductor because
a)
The electron drift speed is usually very large
b)
The number density of free electrons is very high and this can compensate for the low values of the electron drift speed and the very small magnitude of the electron charge
c)
The number density of free electrons as well as the electron drift speeds are very large and these compensate for the very small magnitude of the electron charge
d)
The very small magnitude of the electron charge has to be divided by the still smaller product of the number density and drift speed to get the electric current
Question ID - 150223 :-
We are able to obtain fairly large currents in a conductor because
a)
The electron drift speed is usually very large
b)
The number density of free electrons is very high and this can compensate for the low values of the electron drift speed and the very small magnitude of the electron charge
c)
The number density of free electrons as well as the electron drift speeds are very large and these compensate for the very small magnitude of the electron charge
d)
The very small magnitude of the electron charge has to be divided by the still smaller product of the number density and drift speed to get the electric current
|
We are able to obtain fairly large currents in a conductor because |
|
|
a) |
The electron drift speed is usually very large |
|
b) |
The number density of free electrons is very high and this can compensate for the low values of the electron drift speed and the very small magnitude of the electron charge |
|
c) |
The number density of free electrons as well as the electron drift speeds are very large and these compensate for the very small magnitude of the electron charge |
|
d) |
The very small magnitude of the electron charge has to be divided by the still smaller product of the number density and drift speed to get the electric current |
The number density of free electrons is very high and this can compensate for the low values of the electron drift speed and the very small magnitude of the electron charge
Next Question :
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A battery of emf |
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a) |
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b) |
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c) |
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d) |
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has an internal resistance 
A variable resistance 
is connected to the terminals of the battery. A current 
is drawn from the battery. 
is the terminal potential difference. If 
alone is gradually reduced to zero, which of the following best describes 
and 
?
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