- Unlike charges attract .
- like charges repel .
There are two types of charges
Namely :
On loosing electrons , a neutral body acquires positive charge .
On gaining electrons , a neutral body acquires negative charge .
The amount of charge present in a body , either positive or negative , is expressed in terms of an integral number of charge of an electron , which is considered the elementary entity of an electric charge .
Option 4 ( R2 and R3 ) is the correct answer.
Explanation:
- In the below given diagram, we can see a circuit diagram that has four resistors such as R1, R2, R3, and R4.
- The opening of the circuit is noted as "a" and the ending is noted as "b".
- By observing the above diagram, we can clearly see that R2 and R3 are the pair of resistors that are connected in a parallel manner.
- Where all the other resistors such as R1 and R4 are neither connected in parallel nor in series.
Hence we can conclude that Resistor R2 and R3 are the ones that are connected in parallel.
Option number three is correct energy can be transformed and moved and released but it can't be destroyed and doesn't disappear.
Answer:
Water stay in the bucket if the bucket is spin upside down and fast because due to centripetal force.
Explanation:
When the bucket is at highest point in the circular motion then there will be three forces work centripetal force in upward direction ann normal and weight will work in downward direction.
By newton law,
centripetal force=weight + normal force.
If the water will stay in the bucket in upside direction then there will be normal force is positive which means the centripetal force is greater than weight.
And to increase the centripetal force velocity should be greater because it depends on velocity.
The practical application of centripetal force are discussed below:
(a) Turning of the car on a banked road or in circular track.
(b) Revolution of the earth around the sun.
