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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements about electric field lines (due to static charges) is incorrect?
1. | electric field lines never cross each other at any point. |
2. | electric field lines do not form any closed loop. |
3. | electric field lines can not be taken as continuous curves. |
4. | electric field lines start from a positive charge and end on a negative charge. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe figure below shows tracks of three charged particles in a uniform electrostatic field. Which particle has the highest charge to the mass ratio?
1. | \(2\) | 2. | \(3\) |
3. | \(1\) | 4. | \(1\) and \(3\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA conducting sphere of radius \(10\) cm has an unknown charge. If the electric field, \(20\) cm from the centre of the sphere is \(1.5\times10^3\) N/C and points radially inward, what is the net charge on the sphere?
1. | \(-5.70\) nC | 2. | \(-6.67\) nC |
3. | \(6.67\) nC | 4. | \(5.70\) nC |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude 17.0 x 10-22 C/m2. The electric field between the plates is:
1. 0.96 × 10-10 N/C
2. 1.92 × 10- 10 N/C
3. 0
4. 3.84 × 10-10 N/C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn oil drop of 12 excess electrons is held stationary under a constant electric field of . The density of the oil is . The radius of the drop is:
1. \(9.82\times10^{-4}\) mm
2. \(9.82\times10^{-7}\) mm
3. \(8.92\times10^{-4}\) mm
4. \(8.92\times10^{-7}\) mm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich among the curves shown in the figure represents electrostatic field lines?
1. | 2. | ||
3. | 4. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA particle of mass m and charge (–q) enters the region between the two charged plates initially moving along the x-axis with speed (as shown in the figure). The length of the plate is L and a uniform electric field E is maintained between the plates. The vertical deflection of the particle at the far edge of the plate is:
1. \(\frac{2 q E L^2}{3 m\left(v_x\right)^2}\)
2. \(\frac{2 q E L^2}{m\left(v_x\right)^2}\)
3. \(\frac{3 q E L^2}{2 m\left(v_x\right)^2}\)
4. \(\frac{q E L^2}{2 m\left(v_x\right)^2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA spherical conductor of radius \(12~\text{cm}\) has a charge of \(1.6\times10^{-7}~\text{C}\) distributed uniformly on its surface. The electric field just outside the sphere is:
1. | \(\text{zero}\) | 2. | \(10^5~ \text{NC}^{-1} \) |
3. | \(10^{-5}~ \text{NC}^{-1} \) | 4. | \(10^{6 }~ \text{NC}^{-1} \) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology