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Last Updated On 01-06-2023 - 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


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

1 Answer
5876 Votes
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Answer Key : (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



Next Question :

A battery of emf  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 ?

a)

b)

c)

d)


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