Concepts Of Physics MCQ Edition [Volume 2]PhysicsElectric Current in Conductors
A discharge tube carries an electric current of 2.0 A . Determine the amount of charge that passes through a cross-section of the tube in 5 minutes.
Options
- A1.2 10⁻⁴ C
- B1.0 10⁻⁵ C
- C3.6 10⁻² C
- D6.0 10⁻⁴ C
Correct answer
D. 6.0 10⁻⁴ C
Step-by-step solution
Given current I = 2.0 A = 2.0 10⁻⁶ A Time t = 5 minutes = 5 60 s = 300 s The amount of charge Q passing through a cross-section is given by the relation Q = I t Substituting the values: Q = 2.0 10⁻⁶ 300 Q = 600 10⁻⁶ C Q = 6.0 10⁻⁴ C