Question

1.. what are conductors and insulators.


2.. the distance between Delhi and lucknow is 500 km. how much time will a bus take to cover the distance at an average speed of 50km/hr?


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Answer 1

Answer:

1) Conductors are materials which can conduct or let heat or electricity pass through.

Insulators are materials which resists electricity or heat from passing through it.

2) time = distance / speed

time = 500/50

time = 10 hr

Explanation:

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Answer 2

[1]

Conductors:-

• The substances which allow electric current to pass through them, is known as conductors.

• Example :- metals

Insulators:-

• The substances which do not allow electric current to pass through them are called insulators.

• Example :- wood, plastic,

★More to know:-

• Conductors have low resistance and allows electric current to pass through it.

• Insulators have high resistance and do not allow the electric current to pass through it.

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[2]

Given:-

• Distance between delhi and Lucknow⇾500km.

• Average speed ⇾50km/hr

To find:-

• The time which a bus will take to cover the distance.

Solution:-

➳ Speed = $\sf\dfrac{Distance}{Time}$

➳ Time = $\sf\dfrac{Distance}{Speed}$

➳ Thus, time = $\sf\dfrac{500km}{50km/hr}$ = 10 h

∴ Hence, the time which the Bus will take to cover the distance at an average speed of 50km/hr is $\sf\red{10h}$.

★More to know:-

• Speed is the distance travelled by an object in unit time.

• The SI unit of speed is $\sf\red{m/s}$.

• The SI unit of time is $\sf\red{second}$.

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