Electricity
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Semiconductor Electronics
MCQ (Single Correct Answer)
1
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
2
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
$$q\overrightarrow B + \overrightarrow q \left( {\overrightarrow E \times \overrightarrow v } \right)$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
To convert a galvanometer into a voltmeter one should connect a
A
high resistance in series with galvanometer
B
low resistance in series with galvanometer
C
high resistance in parallel with galvanometer
D
low resistance in parallel with galvanometer.
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
An electron having mass m and kinetic energy E anter in uniform magnetic field B perpendiculaly, then its frequency will be
A
$${{eE} \over {qvB}}$$
B
$${{2\pi m} \over {eB}}$$
C
$${{eB} \over {2\pi m}}$$
D
$${{2m} \over {eBE}}$$
NEET Subjects