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AIIMS 2008
Exam
AIIMS
Year
2008
Subject
Physics
Chapter
Magnetic Effects of Current

AIIMS 2008 · Physics · Magnetic Effects of Current

Two changes +q and -q are attached to the two ends of a light rod...

Two changes +q+q and −q-q are attached to the two ends of a light rod of length LL, as shown in figure. The system is given a velocity vv perpendicular to magnetic field (\vec{B}). The magnetic force on the system of charges and magnitude of force on one charge by the rod, are respectively Two changes +q and -q are attached to the two ends of a light rod of length L , as shown in figure. The system is given

Options

  1. Azero, zero
  2. Bzero, qvBq v B
  3. C2qvB,02 q v B, 0
  4. D2qvB,qvB2 q v B, q v B

Correct answer

B. zero, qvBq v B

Step-by-step solution

Net charge on system =0=0 ∴\therefore \quad Net force on system =0=0. Now consider one charge : F=qvBF=q v B.
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