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Accelerate NEET 2020: Electromagnetic induction Class 1 (04.12.2019)
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Question 1
A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate 
. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of the magnetic field as shown in the figure. Then, the emf generated is 
Question 2
A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when :
Question 3
Induced emf in the coil depends upon
Question 4
A coil of resistance 400 
is placed in a magnetic field. If the magnetic flux 
(Wb) linked with the coil varies with time t (sec) as 
= 50
+4.
The current in the coil at t= 2s is
is placed in a magnetic field. If the magnetic flux (Wb) linked with the coil varies with time t (sec) as = 50+4. The current in the coil at t= 2s is
Question 5
A long solenoid of diameter 0.1 m has 
turns per meter. At the center of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with solenoid axis. The current in the solenoid reduces at a constant rate to 0A from 4A in 0.05 s. If the resistance of the coil is 
. The total charge flowing through the coil during this time is:-
turns per meter. At the center of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with solenoid axis. The current in the solenoid reduces at a constant rate to 0A from 4A in 0.05 s. If the resistance of the coil is . The total charge flowing through the coil during this time is:- - 182 attempts
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Dec 2NEET & AIIMS
