MCQ
Assertion (A) Wire gets hot when electric current passes through it.
Reason (R) It is due to the resistance in the wire.
  • Both A and R are true and R is the correct explanation of A
  • B
    Both A and R are true but R is the not the correct explanation of A
  • C
    A is true but R is false
  • D
    A is false but R is true

Answer

Correct option: A.
Both A and R are true and R is the correct explanation of A
A

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

Assertion (A): The flow of electric current in a circuit requires a complete path.
Reason (R): If the circuit is incomplete, current will not flow.
The following questions consist of two statements.
Assertion (A) and Reason (R). Answer the following questions by selecting the appropriate option given below.
Assertion (A) Boiled and chewed rice does not give blue-black colour with iodine solution.
Reason (R) Boiled and chewed rice contains starch.
Assertion (A): Shadows are always black or faint.
Reason (R): Colour of an object does not affect shadow.
The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
Assertion (A) During neutralisation reaction, the reaction mixture becomes hot.
Reason (R) Dilute sulphuric acid when added to lime water (which is a base), releases heat energy.
Assertion (A): Iron develops rust when comes into contact with moist air.
Reason (R): It reacts with air and water.
Assertion (A): Non-metals form acidic oxides.
Reason (R): Non-metallic oxides turn blue litmus paper red.
Assertion (A): Evaporation is a process where water changes into vapour and rises into the atmosphere.
Reason (R): Evaporation requires heat energy from the Sun or other sources.
The following questions consist of two statements Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.
Assertion (A) Rusting is the formation of rust.
Reason (R) Heating speeds up rusting.
Assertion (A): Questions about light and shadows lead to a deeper understanding of the universe.
Reason (R): Studying light and shadows helps explain phenomena like eclipses and the Earth’s movement.
Assertion (A): Burning of magnesium is a chemical change.
Reason (R): A new substance is formed when magnesium burns in air.