1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Under the influence of a uniform magnetic field, a charged particle moves with constant speed v in a circle of radius R. The time period of rotation of the particle
A
depends on R and not on v
B
is independent of both v and R
C
depends on both v and R
D
depends on v and not on R
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A student measures the terminal potential difference (V) of a cell (of emf $$\varepsilon $$ and internal resistance r) as a function of the current (I) flowing through it. The slope, and intercept, of the graph between V and I, then respectively, equal
A
$$-$$ r and $$\varepsilon $$
B
r and $$-$$ $$\varepsilon $$
C
$$-$$ $$\varepsilon $$ and r
D
$$\varepsilon $$ and $$-$$ r
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The magnetic force acting on a charged particle of charge $$-$$2 $$\mu $$C in a magnetic frield of 2 T acting in y direction, when the particle velocity is $$\left( {2\widehat i + 3\widehat j} \right) \times {10^6}\,m{s^{ - 1}}$$
A
4 N in z direction
B
8 N in y direction
C
8 N in z direction
D
8 N in $$-$$ z direction
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
A wire of resistance 12 ohms per meter is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the figure is

AIPMT 2009 Physics - Current Electricity Question 83 English
A
$$3\,\Omega $$
B
$$6\pi \,\Omega $$
C
$$6\,\Omega $$
D
$$0.6\pi \,\Omega $$