Answer:
The magnetic flux through the loop shown in the figure below increases according to the relation:
Φ
B
=6.0t
2
+7.0t
where Φ
B
is the magnetic flux in milliwebers and t is the time in seconds.
The magnetic flux is the measure of the number of magnetic field lines passing through a surface. The magnetic field lines are lines of force that represent the direction and strength of the magnetic field. The magnetic flux through a loop is calculated by multiplying the area of the loop by the magnetic field strength.
In this case, the magnetic flux is increasing linearly with time. This means that the number of magnetic field lines passing through the loop is increasing at a constant rate. The rate of increase is equal to the slope of the graph, which is 6.0 milliwebers per second.
The magnetic flux will be 21 milliwebers when t = 3 seconds.
Step-by-step explanation: