# Factors Affecting Resistance & How They Affect

## Trending Questions

**Q.**Which of the following graphs is incorrect for a conductor at a given temperature?

**Q.**

On what factors does the resistance fo a conductor depend?

**Q.**

What is the resistance of a conductor ? Mention the factors of the resistance of a conductor depend

**Q.**Question 6

A copper wire has diameter 0.5 mm and resistivity of 1.6×10−8 Ω m. What will be the length of this wire to make its resistance 10 Ω ? How much does the resistance change if the diameter is doubled?

**Q.**

Will current flow more easily through a thick wire or a thin wire of the same material when connected in the same source? Give reason for your answer.

**Q.**We stretch a wire of resistance R such that its length increases by 20%. Then the percentage change in its resistance will be?

- 20%
- 44%
- 10%
- 40%

**Q.**

If the diameter of a resistance wire is halved, then its resistance becomes:

(a) four times (b) half (c) one - fourth (d) two times

**Q.**

**Question 7**

The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below −

Plot a graph between V and I and calculate the resistance of that resistor.

**Q.**If a wire of resistance 'R' is stretched twice its original length keeping volume constant then what will be its new resistance?

(let new resistance as R')

- 2R
- R/3
- 4R
- R/2

**Q.**

If an increase in the length of copper wire is 25% due to stretching, the percentage increase in its resistance will be:

1.5%

1%

2%

0.2%

**Q.**

If the length of a wire is doubled by taking more of wire, what happens to its resistance?

**Q.**

A wire of resistance 9 ohm having length 30 cm is tripled on itself. What is its new resistance?

**Q.**

What is cross section of conductor?

**Q.**

What length of copper wire of specific resistance 1.7×10−8Ω m and radius 1 mm is required so that its resistance is 1Ω

**Q.**

A wire of resistance 3 ohm and length 10 cm is stretched to length 30 cm. Assuming that it has a uniform cross-section, what will be its new resistance?

**Q.**

What is the change in resistance of a wire which is stretched triple its length?

**Q.**

Nine identical wires each of diameter d and length L are connected in parallel. The combination has the same resistance as a single similar wire of length $L$ but whose diameter is ____.

**Q.**

A thick wire has smaller resistance while a thin wire has larger resistance.

True

False

**Q.**

Certain wire has resistance of 10 Ohm. If it is stretched by 1/10th of its length, then its resistance is nearly:

11 Ω

9 Ω

10 Ω

12 Ω

**Q.**

How does the resistance of a wire change when

(i) its length is tripled?

(ii) its diameter is tripled?

(ii) its material is chanaged to one whose resistivity is three times?

**Q.**

How does the resistance of a wire depend on its length? Give a reason for your answer.

**Q.**

Resistance of a metallic conductor does not depend on its length.

True

False

**Q.**

Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare (i) their resistances, (ii) their specific resistance.

**Q.**

State the factors affecting resistance of a conductor.

**Q.**

State two properties of high tension wires.

**Q.**The resistance of 100 m long copper wire with diameter 1 mm is ___ ohms. (Copperρ=1.6× 10−8) ohm-m

- 2.04
- 20.4
- 0.204
- 204

**Q.**

How does the resistance of a wire change when it's length is tripled?

**Q.**

A particular rsistance wire has a resistance of 3.0 ohm per metre. Find:

(a) The total resistance of three lengths of this wire each 1.5 m long, joined in parallel.

(b) The potential difference of the battery which gives a current of 2.0 A in each of the 1.5 m length when connected in parallel to the battery (assume that the resistance of battery is negligible).

(c) The resistance of 5 m length of a wire of the same material, but with twice the area of cross-section.

**Q.**

A wire of resistance 20 Ohm is bent to form a closed square . What is the resistance across a diagonal of the square?

**Q.**If resistance of sorting of a wire is 1 ohm then the resistance of a similar nichrome wire will be about:?

Please provide me with an answer