1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
A uniform magnetic field is restricted within a region of rafius r. The magnetic field changes with time at a rate $${{d\overrightarrow B } \over {dt}}$$. Loop 1 of radius R > r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure. Then the e.m.f. generated is

NEET 2016 Phase 2 Physics - Electromagnetic Induction Question 25 English
A
zero in loop 1 and zero in loop 2
B
$$ - {{d\overrightarrow B } \over {dt}}\pi {r^2}$$ in loop 1 and $$ - {{d\overrightarrow B } \over {dt}}\pi {r^2}$$ in loop 2
C
$$ - {{d\overrightarrow B } \over {dt}}\pi {R^2}$$ in loop 1 and zero in loop 2
D
$$ - {{d\overrightarrow B } \over {dt}}\pi {r^2}$$ in loop 1 and zero in loop 2
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
A long solenoid has 1000 turns. When a current of 4 A flows through it, the magnetic flux linked with each turn of the solenoid is 4 $$ \times \,{10^{ - 3}}$$ Wb. The self-inductance of the solenoid is
A
2 H
B
1 H
C
4 H
D
3 H
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
An electron moves on a straight line path XY as shown. The abcd is a coil adjacent to the path of electron. What will be the direction of current, if any, induced in the coil ?

AIPMT 2015 Physics - Electromagnetic Induction Question 23 English
A
The current will reverse its direction as the electron goes past the coil
B
No current induced
C
abcd
D
adcb
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field B, as shown in the figure.

AIPMT 2014 Physics - Electromagnetic Induction Question 22 English
The potential difference developed across the ring when its speed is $$v$$, is
A
zero
B
$${{Bv\pi {r^2}} \over 2}$$ and P is at higher potential
C
$$\pi rBV$$ and R is at higher potential
D
2rBV and R is at higher potential
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