Select Chapter Topics:

What is the flux through a cube of side \(a,\) if a point charge of \(q\) is placed at one of its corners?

1. \(\frac{2q}{\varepsilon_0}\)

2. \(\frac{q}{8\varepsilon_0}\)

3. \(\frac{q}{\varepsilon_0}\)

4. \(\frac{q}{2\varepsilon_0}\)

Subtopic: Gauss's Law |

88%

From NCERT

AIPMT - 2012

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A charge \(Q\) is enclosed by a Gaussian spherical surface of radius \(R\). If the radius is doubled, then the outward electric flux will:

1. | be reduced to half |

2. | remain the same |

3. | be doubled |

4. | increase four times |

Subtopic: Gauss's Law |

88%

From NCERT

AIPMT - 2011

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Two positive ions, each carrying a charge \(q\), are separated by a distance \(d\). If \(F\) is the force of repulsion between the ions, the number of electrons missing from each ion will be:

(\(e\) is the charge on an electron)

1. | \(\frac{4 \pi \varepsilon_{0} F d^{2}}{e^{2}}\) | 2. | \(\sqrt{\frac{4 \pi \varepsilon_{0} F e^{2}}{d^{2}}}\) |

3. | \(\sqrt{\frac{4 \pi \varepsilon_{0} F d^{2}}{e^{2}}}\) | 4. | \(\frac{4 \pi \varepsilon_{0} F d^{2}}{q^{2}}\) |

Subtopic: Coulomb's Law |

78%

From NCERT

AIPMT - 2010

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A square surface of side \(L\) (metre) in the plane of the paper is placed in a uniform electric field \(E\) (volt/m) acting along the same plane at an angle θ with the horizontal side of the square as shown in the figure. The electric flux linked to the surface in the unit of V-m is:

1. | \(EL^{2}\) | 2. | \(EL^{2} cos\theta \) |

3. | \(EL^{2} sin\theta \) | 4. | \(0\) |

Subtopic: Electric Field |

75%

From NCERT

AIPMT - 2010

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

The mean free path of electrons in a metal is \(4\times 10^{-8}~\text{m}\). The electric field which can give an average of \(2~\text{eV}\) energy to an electron in the metal will be in units of Vm^{-1}:

1. \(8\times 10^{7}\)

1. \(8\times 10^{7}\)

2. \(5\times 10^{-11}\)

3. \(8\times 10^{-11}\)

4. \(5\times 10^{7}\)

Subtopic: Electric Field |

From NCERT

AIPMT - 2009

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A thin conducting ring of radius \(R\) is given a charge \(+Q.\) The electric field at the centre \(O\) of the ring due to the charge on the part \(AKB\) of the ring is \(E.\) The electric field at the centre due to the charge on the part \(ACDB\) of the ring is:

1. \(3E\) along \(KO\)

2. \(E\) along \(OK\)

3. \(E\) along \(KO\)

4. \(3E\) along \(OK\)

Subtopic: Electric Field |

75%

From NCERT

AIPMT - 2008

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Three-point charges \(+q\), \(-2q\) and \(+q\) are placed at points \((x=0,y=a,z=0)\), \((x=0, y=0,z=0)\) and \((x=a, y=0, z=0)\), respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are:

1. | \(\sqrt{2}qa\) along \(+y\) direction |

2. | \(\sqrt{2}qa\) along the line joining points \((x=0,y=0,z=0)\) and \((x=a,y=a,z=0)\) |

3. | \(qa\) along the line joining points \((x=0,y=0,z=0)\) and \((x=a,y=a,z=0)\) |

4. | \(\sqrt{2}qa\) along \(+x\) direction |

Subtopic: Electric Dipole |

84%

From NCERT

AIPMT - 2007

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A hollow cylinder has a charge \(q\) coulomb within it (at the geometrical centre). If \(\phi\) is the electric flux in units of Volt-meter associated with the curved surface \(B,\) the flux linked with the plane surface \(A\) in units of volt-meter will be:

1. \(\frac{1}{2}\left(\frac{q}{\varepsilon_0}-\phi\right)\)

2. \(\frac{q}{2\varepsilon_0}\)

3. \(\frac{\phi}{3}\)

4. \(\frac{q}{\varepsilon_0}-\phi\)

Subtopic: Gauss's Law |

75%

From NCERT

AIPMT - 2007

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

A square surface of side *\(L\)* (m) is in the plane of the paper. A uniform electric field \(\vec{E}\) (V/m), also in the plane of the paper, is limited only to the lower half of the square surface, (see figure). The electric flux in SI units associated with the surface is:

1. | \(EL^2/ ( 2ε_0 )\) | 2. | \(EL^2 / 2\) |

3. | zero | 4. | \(EL^2\) |

Subtopic: Gauss's Law |

81%

From NCERT

AIPMT - 2006

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is \(r\) (as shown in Fig. I). Now, as shown in Fig. II, the strings are rigidly clamped at half the height. The equilibrium separation between the balls now becomes:

1. \(\frac{r}{\sqrt[3]{2}}\)

2. \(\frac{r}{\sqrt[2]{2}}\)

3. \(\frac{2r}{3}\)

4. none of the above

1. \(\frac{r}{\sqrt[3]{2}}\)

2. \(\frac{r}{\sqrt[2]{2}}\)

3. \(\frac{2r}{3}\)

4. none of the above

Subtopic: Coulomb's Law |

70%

From NCERT

AIPMT - 2013

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

Links

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Select Chapter Topics: