1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
A charge q moves in a region where electric field and magnetic field both exist, then force on it is
A
$$q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
B
$$q\overrightarrow E + q\left( {\overrightarrow v \times \overrightarrow B } \right)$$
C
$$q\overrightarrow E + \overrightarrow q \left( {\overrightarrow B \times \overrightarrow v } \right)$$
D
$$q\overrightarrow B + \overrightarrow q \left( {\overrightarrow E \times \overrightarrow v } \right)$$
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
The magnetic field of given length of wire for single turn coil at its centre is B then its value for two turns coil for the same wire is
A
B/4
B
B/2
C
4B
D
2B
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similar poles are same side then its time period of oscillation is T1. Now the polarity of one of the magnet is reversed then time period of oscillation is T2, then
A
T1 < T2
B
T1 = T2
C
T1 > T2
D
T2 = $$\infty $$
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
For a series LCR circuit the power loss at resonance is
A
$${{{V^2}} \over {\left[ {\omega L - {1 \over {\omega C}}} \right]}}$$
B
$${I^2}L\omega $$
C
$${I^2}R$$
D
$${{{V^2}} \over {C\omega }}$$
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