1
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
2
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
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A current of 2.5 A flows through a coil of inductance 5 H. The magnetic flux linked with the coil is
A
0.5 Wb
B
12.5 Wb
C
zero
D
2 Wb
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is
A
four times per revoluation
B
six times per revolution
C
once per revolution
D
twice per revolution
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