The electric current in a solenoid is uniformly decreased from itsinital value t
ID: 1752009 • Letter: T
Question
The electric current in a solenoid is uniformly decreased from itsinital value to zero at a constant rate. During that time anelectric field is generated inside the solenoid. Which of thefollowing statement applies to the electric field?a. the magnitude of the electric field is constant in time butincreases along the radial direction away from the axis of thesolenoid
b. the magnitude of the electric field is constant in time, butdecreases along the radial direction away from the axis of thesolenoid
c. the magnitude of the electric field is the same everywherewithin the solenoid and is constant in time
d. the magnitude of the electric field is the same at everypoint within the solenoid but it decrease uniformly in time at thesame rate as the electric current
e. there is no relationship between the electric field inside thesolenoid and the variation of its electric current
Explanation / Answer
answer is a)