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Author Question: A silver wire has a cross sectional area A = 2mm2. A total of of 9.4 1018 electrons pass through ... (Read 56 times)

panfilo

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on: Jul 29, 2018
A silver wire has a cross sectional area A = 2mm2. A total of of 9.4  1018 electrons pass through the wire in a time t = 3s. Silver has nq = 5.8  1028 electrons/m3. What is the drift velocity of these electrons?
 
  A)
 
  2.7  10-5 m/s
  B)
 
  9.1  10-5 m/s
  C)
 
  5.2  10-5 m/s
  D)
 
  1.1  10-5 m/s
  E)
 
  7.4  10-5 m/s

Question 2

A coil with a self-inductance of 6 H has a constant current of 2 A flowing through it for 2 seconds. What is the emf induced in this coil?
 
  A)
 
  6 V
  B)
 
  12 V
  C)
 
  0 V
  D)
 
  4 V
  E)
 
  8 V


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asdfghjkl;

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

C


panfilo

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Reply 2 on: Jul 29, 2018
Excellent

rleezy04

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Reply 3 on: Yesterday
Gracias!

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