In figure two positive charges q2 and q3 fixed along the y-axis, exert a net electric force in the +x-direction on a charge q1, fixed along the x-axis. If a positive charge Q is added at (x, 0), the force on q1
(a) Shall increase along the positive x-axis (b) Shall decrease along the positive x-axis (c) Shall point along the negative x-axis (d) Shall increase but the direction changes because of the intersection of Q with q2 and q3
This is a Multiple Choice Questions as classified in NCERT Exemplar
Answer. (a)
Explanation-The force between (q1, q2) and (q1, q3) is must be attractive to net forces act in positive direction of x . so q1 must be negative. But if we place a positive charge Q in positive direction of x then it must be attractive towards along x-axis. So it will be attractive towards positive x axis.
<p>This is a Multiple Choice Questions as classified in NCERT Exemplar</p><p><strong>Answer. (a)</strong></p><p><strong>Explanation</strong>-The force between (q1, q2) and (q1, q3) is must be attractive to net forces act in positive direction of x . so q1 must be negative. But if we place a positive charge Q in positive direction of x then it must be attractive towards along x-axis. So it will be attractive towards positive x axis. </p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1741755271phpEnYWRQ_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1741755271phpEnYWRQ.jpeg" alt="" width="231" height="145"><img src="https://images.shiksha.com/mediadata/images/articles/1741755307phpigsUS2.jpeg" alt="" width="196" height="168"></picture></div></div>
The following are the topics covered in this chapter: Electric Field and Field Lines, Gauss's Law, Electric Dipole, Conductors and Insulators, and Electric Flux.
Indeed, it is an easy chapter of Class 12 Physics. In this chapter, you will learn about the foundational concepts like Gauss's law and electric fields.
In the medical entrance test NEET, this chapter has a moderate weightage. You can expect around 2-3 questions of this chapter that contributes to the 3-5% of the total marks in the Physics section.
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