IB Physics Electric current

A tutorial sheet of questions on electric current is given below.

  1. State the definition of electric current.
  2. The ampere is a fundamental unit. What does a current of 1 A mean?
  3. Every second 100 electrons pass a point moving to the left. What is the current?
  4. Every minute 1000 electrons pass a point moving to the right. In the same time interval 1000 protons pass this point moving at the same rate to the right. The charges do not interact. a) What is the current at this point? b) What net charge passes this point in this time interval?