Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 75

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A uniform wire of resistance $R$ and length $L$ is cut into four equal parts, each of length $\frac{L}{4}$ , which are then connected in parallel combination. The effective resistance of the combination will be

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Important Questions on Current Electricity

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 76

A metallic wire of resistance

12 Ω

is bent to from a square. The resistance between two diagonal points would be

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 77

By using only two resistance coils-singly, in series or in parallel, one should be able to obtain resistance of

3

,

4

,

12

and

16

ohms. The separate resistances of the coil are

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 78

A parallel combination of two resistors, of

1 Ω

each, is connected in series with a

1.5 Ω

resistor. The total combination is connected across a

10 V

battery. The current flowing in the circuit is

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 79

The potential difference between the terminals of a cell in open circuit is

2.2 V

with an internal resistance of

5 Ω

across the terminals of a cell, the terminal potential difference is

1.8 V

. the resistance of the cell is

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 80

The magnitude of $I$ in ampere is

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 81

What is the equivalent resistance across the points

A

and

B

in the circuit given below?

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 82

What is the equivalent resistance between points

A

and

B

in the circuit if

R = 3 Ω

?

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Achieve CUET (UG) Physics Practice Book>Chapter 3 - Current Electricity>Exercise>Q 83

The internal resistance of a cell of emf

2 V

is

0.1 Ω

. It is connected to a resistor of resistance

3.9 Ω

. The potential difference across the resistor is