Assertion: It is more difficult to move a magnet into a coil with more loops.
Reason: This is because emf induced in each current loop resists the motion of the magnet.
A
Both 
and 
are true and 
is a correct explanation for 
.
and are true and is a correct explanation for . B
Both 
and 
are true but 
is not a correct explanation for 
.
and are true but is not a correct explanation for . C
is true and 
is false. D
is false, 
is true.
Text Solution
Verified by ExpertsThe correct answer is:
A
As, we know that,
emf induced, 
and,
is area of cross-section.
If 
increases, emf also increases and this back emf resist motion of magnet.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
An inductor is connected to an ac source of frequency 50 . The frequency of the instantaneous powe…
A circular coil of area and 40 turns is rotated about its vertical diameter with an angular speed …
A resistor of resistance of is connected to an source t. The energy dissipated as heat during t…
An alternating current is given by ) . The rms current (in ) is
A copper wire of radius and resistance is connected across a power supply of . The number of ele…
Why is more dangerous than 220 V DC?