AIPMT 2002 | Moving Charges and Magnetism Question 68 | Physics

AIPMT 2002

MCQ (Single Correct Answer)

-1

A charge q moves in a region where electric field and magnetic field both exist, then force on it is

$$q\left( {\overrightarrow v \times \overrightarrow B } \right)$$

$$q\overrightarrow E + q\left( {\overrightarrow v \times \overrightarrow B } \right)$$

$$q\overrightarrow E + \overrightarrow q \left( {\overrightarrow B \times \overrightarrow v } \right)$$

$$q\overrightarrow B + \overrightarrow q \left( {\overrightarrow E \times \overrightarrow v } \right)$$

AIPMT 2002

MCQ (Single Correct Answer)

-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

B/4

B/2

AIPMT 2001

MCQ (Single Correct Answer)

-1

If number of turns, area and current through a coil is given by n, A and $$i$$ respectively then its magnetic moment will be

$$niA$$

$${n^2}iA$$

$$ni{A^2}$$

$${{ni} \over {\sqrt A }}$$

AIPMT 2001

MCQ (Single Correct Answer)

-1

An electron having mass m and kinetic energy E anter in uniform magnetic field B perpendiculaly, then its frequency will be

$${{eE} \over {qvB}}$$

$${{2\pi m} \over {eB}}$$

$${{eB} \over {2\pi m}}$$

$${{2m} \over {eBE}}$$

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