Question

Assertion   :   In practical application, power rating of resistance is not important.

Reason      : Property of resistance remain same even at high temperature.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

Answer

(d) If the assertion and reason both are false.

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

A uniform wire of resistance 9 W is cut into 3 equal parts.  They are connected in the form of equilateral triangle ABC.  A cell of e.m.f. 2 V and negligible internal resistance is connected across B and C.  Potential difference across AB is

(a) 1 V     

(b) 2 V

(c) 3 V     

(d) 0.5 V

When the charged particles move in a combined magnetic and electric field, then the force acting is known as _________.
Which of the following about potential difference between any two points is true?
  1. It depends only on the initial and final position.
  2. It is the work done per unit positive charge in moving from one point to other.
  3. It is more for a positive charge of two units as compared to a positive charge of one unit.

    A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

    (a) Get deflected vertically upwards

    (b) Move in a circular orbit with its speed increased

    (c) Move in a circular orbit with its speed unchanged

    (d) Continue to move due east

    One curie is equal to:
    Transformers are used:

    In Fig. X represents time and Y represent activity of a radioactive sample. Then the activity of sample, varies with time according to the curve

    (a) A

    (b) B

    (c) C

    (d) D

    The resistivity of a wire

    (a) Increases with the length of the wire

    (b) Decreases with the area of cross-section

    (c) Decreases with the length and increases with the cross-section of wire

    (d) None of the above statement is correct

    A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm.  The image would be formed at

    (a) 30 cm left

    (b) Infinity

    (c) 1 cm to the right

    (d) 18 cm to the left

    In Geiger-Marsden scattering experiment, the trajectory traced by an a-particle depends on: