1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
If specific resistance of a potentiometer wire is 10-7$$\Omega $$ m and current flow through it is 0.1 amp., cross-sectional area of wire is 10$$-$$6 m2 then potential gradient will be
A
10$$-$$2 volt/m
B
10$$-$$4 volt/m
C
10$$-$$6 volt/m
D
10$$-$$8 volt/m.
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Among which the magnetic susceptibility does not depened on the temperature ?
A
diamagnetism
B
paramagnetism
C
ferromagnetism
D
ferrite.
3
AIPMT 2001
MCQ (More than One Correct Answer)
+4
-1
The value of quality factor is
A
$${{\omega R} \over L}$$
B
$${1 \over {\omega RC}}$$
C
$$\sqrt {LC} $$
D
$$L/R$$
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
For a coil having L = 2 mH, current flow through it is $$I = {t^2}{e^{ - t}}$$ then, the time at which emf become zero
A
2 sec
B
1 sec
C
4 sec
D
3 sec