A student has three \(6.0~\Omega\) resistors that can be connected together in any configuration. What are the maximum and minimum resistance that can be obtained by using one or more of these three resistors?

(Assume the connections between the resistors have negligible resistance, the temperature of the resistors is constant, and the resistors are used in a d.c. circuit and none of the resistors are shortcircuited.)

1. | \(12~\Omega\); minimum resistance: \(0.50~\Omega\) | maximum resistance:

2. | \(6.0~\Omega\); minimum resistance: \(0.50~\Omega\) | maximum resistance:

3. | \(18~\Omega\); minimum resistance: \(6.0~\Omega\) | maximum resistance:

4. | \(18~\Omega\); minimum resistance: \(2.0~\Omega\) | maximum resistance:

Subtopic: Combination of Resistors |

91%

From NCERT

Please attempt this question first.

Hints

Please attempt this question first.

A circuit consists of five identical conductors as shown in the figure. The two similar conductors are added as indicated by the dotted lines. The ratio of resistances before and after addition will be:

1. \(7/5\)

2. \(3/5\)

3. \(5/3\)

4. \(6/5\)

1. \(7/5\)

2. \(3/5\)

3. \(5/3\)

4. \(6/5\)

Subtopic: Combination of Resistors |

84%

From NCERT

Please attempt this question first.

Hints

Please attempt this question first.

The equivalent resistance between \(A\) and \(B\) for the mesh shown in the figure is:

1. | \(7.2\) \(\Omega\) | 2. | \(16\) \(\Omega\) |

3. | \(30\) \(\Omega\) | 4. | \(4.8\) \(\Omega\) |

Subtopic: Combination of Resistors |

87%

From NCERT

NEET - 2020

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 equivalent resistance between points \(A\) and \(B\) in the circuit shown in the figure is:

1. | \(6R\) | 2. | \(4R\) |

3. | \(2R\) | 4. | \(R\) |

Subtopic: Combination of Resistors |

83%

From NCERT

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

What is the equivalent resistance between \(A\) and \(B\) in the figure below if \(R= 3~\Omega?\)

1. \(9~\Omega\)

2. \(12~\Omega\)

3. \(15~\Omega\)

4. None of these$$

Subtopic: Combination of Resistors |

81%

From NCERT

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 potential divider is used to give outputs of \(2~\text{V}\) and \(3~\text{V}\) from a \(5~\text{V}\) source, as shown in the figure.

Which combination of resistances, from the ones given below, \(R_1, R_2, ~\text{and}~R_3\) give the correct voltages?1. | \({R}_1=1~\text{k} \Omega, {R}_2=1 ~\text{k} \Omega, {R}_3=2 ~\text{k} \Omega\) |

2. | \({R}_1=2 ~\text{k} \Omega, {R}_2=1~\text{k} \Omega, {R}_3=2~\text{k} \Omega\) |

3. | \({R}_1=1 ~\text{k} \Omega, {R}_2=2~ \text{k} \Omega, {R}_3=2~ \text{k} \Omega\) |

4. | \({R}_1=3~\text{k} \Omega, {R}_2=2~\text{k} \Omega, {R}_3=2~ \text{k} \Omega\) |

Subtopic: Combination of Resistors |

79%

From NCERT

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

In the circuit shown in the figure, the effective resistance between \(A\) and \(B\) is:

1. \(2~\Omega\)

2. \(4~\Omega\)

3. \(6~\Omega\)

4. \(8~\Omega\)

Subtopic: Combination of Resistors |

79%

From NCERT

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

Hints

To view explanation, please take trial in the course.

NEET 2025 - Target Batch

The effective resistance between points \(P\) and \(Q\) of the electrical circuit shown in the figure is:

1. | \(\frac{2 R r}{\left(R + r \right)}\) | 2. | \(\frac{8R\left(R + r\right)}{\left( 3 R + r\right)}\) |

3. | \(2r+4R\) | 4. | \(\frac{5R}{2}+2r\) |

Subtopic: Combination of Resistors |

76%

From NCERT

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 resistance between points \(A\) and \(B\) in the circuit shown in the following figure is:

1. | \(10~\Omega\) | 2. | \(20~\Omega\) |

3. | \(30~\Omega\) | 4. | \(40~\Omega\) |

Subtopic: Combination of Resistors |

76%

From NCERT

Please attempt this question first.

Hints

Please attempt this question first.

The equivalent resistance between \(A\) and \(B\) is:

1. \(3~\Omega\)

2. \(6~\Omega\)

3. \(9~\Omega\)

4. \(12~\Omega\)$$

$\mathrm{}$

Subtopic: Combination of Resistors |

72%

From NCERT

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