Assertion : An electric bulb becomes dim, when an electric heater in parallel circuit is switched on.
Reason : Dimness decreases after sometime.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : An electric bulb becomes dim, when the electric heater in parallel circuit is switched on. Reason : Dimness decreases after sometime.

Why an electric bulb becomes dim when an electric heater in parallel circuit is switched on? Why dimness decreases after some time?

Assertion : A glowing bulb becomes dim when an iron bar is put in the inductor in the a.c. circuit Reason : Resistance of the circuit increases.

An electric heater connected in parallel with an electric bulb is switched on . Explain why the bulb becomes dim . Why dimness decreases after sometime ?

Why is it impracticable to connect an electric bulb and an electric heater in series ?

It is not advisable to connect an electric bulb and electric heater in series.

Assertion : If an electric fan be switched on in a closed room, the air of the room will be cooled. Reason : Fan air decrease the temperature of the room.