MCQ
Assertion (A): When an electric current passes through a conductor, it gets heated. This warming is called the heating effect of electric current.
Reason (R): When electric current flows through any conductor, it faces some opposition or resistance to its flow. This resistance converts some electric energy to heat energy.
  • A
    Both (A) and (R) are true, and (R) is the correct explanation of (A).
  • B
    Both (A) and (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • D
    (A) is false, but (R) is true.

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Amit was travelling in a taxi when he saw lightning at some distance. He heard a loud thunder after a few seconds.
(i) What should Amit do immediately to remain safe?
(a) Increase the speed of the car
(b) Stop the car and remain seated inside
(c) Stop the car and take shelter inside a building
(d) Turn the car and travel in the opposite direction
(ii) Which of these conditions results in lightning?
(a) Negative and positive charges meeting
(b) The number of negative charges increasing
(c) The number of positive charges increasing
(d) Negative and positive charges moving away from each other.
(iii) A lightning conductor protects a building from lightning. What is a lightning conductor made of?
(a) Glass
(b) Metal
(c) Wood
(d) Plastic
$........$ is used for making candles.
While sitting on the first bench, Mutum finds it difficult to read what is written on the blackboard. However, he can clearly see the same when he sits on the last bench. It can be concluded that Mutum is suffering from.
The distances between the various celestial objects are usually expressed in the unit of:
Which of these steps when adopted will contribute towards better waste management?
Assertion (A) Height of an individual is roughly comparable to that of a family member.
Reason (R) Height depends on the genes inherited from parents.
Paheli wants to know that what is the full form of $\text{npk:}$
Assertion (A): Earth is the only planet in the solar system known to support life.
Reason (R): Earth’s position in the habitable zone allows liquid water to exist, essential for life.
Refer to the given paragraph.
$X$ and $Y$ are the two type of cells. The $X$ have a well organised nucleus which is separated from the cytoplasm by the nuclear membrane. On the other hand, $Y$ do not have a true nucleus and their nuclear material is in direct contact with cytoplasm. Identify $X$ and $Y$ and select the correct option.
The cell formed after fertilization is called?