1
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
The resistance of an ammeter is 13 $$\Omega$$ and its scale is graduated for a current upto 100 amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 amperes by this meter. The value of shunt-resistance is
A
2 $$\Omega$$
B
0.2 $$\Omega$$
C
2 k$$\Omega$$
D
20 $$\Omega$$
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
When a charged particle moving with velocity $$\overrightarrow v$$ is subjected to a magnetic field of induction $$\overrightarrow B$$, the force on it is non-zero. This implies that
A
angle between is either zero or 180o
B
angle between is necessarily 90o
C
angle between can have any value other than 90o
D
angle between can have any value other than zero and 180o.
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
Two circular coils 1 and 2 are made from the same wire but the radius of the 1st coil is twice that of the 2nd coil. What is the ratio of potential difference in volts should be applied across them so that the magnetic field at their centres is the same?
A
2
B
3
C
4
D
6
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
An electron moves in a circular orbit with a uniform speed v. It producess a magnetic field B at the centre of the circle. The radius of the circle is proportional to
A
$$\sqrt {B/v}$$
B
$$B/v$$
C
$$\sqrt {v/B}$$
D
$$v/B$$
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12