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QJEEM17Ph1a81: JEE Main 2017 Physics - Class 12 JEEM17Ph1a81 Solution: A negative test charge is moving near a long straight wire…

A negative test charge is moving near a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is :

Multiple Choice Options

  • A away from the wire
  • B towards the wire
  • C parallel to the wire along the current
  • D parallel to the wire opposite to the current

Step-by-Step Verified Solution

JEE Main 2017 (Online) 9th April Morning Slot Physics - Magnetic Effect of Current Question 171 English Explanation

Given situation is shown in the figure

As we know,

F→=q(v→×B→)

F→=−q0(v→×B→)

According to question, direction of current is parallel to the force acting on the electron. Hence, the motion of test charge is towards the wire.

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