MCQ
If the current I through a resistor is increased by 100% the increased in power dissipation will be (assume temperature remain unchanged):
- A100%
- B200%
- C300%
- D400%
✓
Answer
- 300%
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Four identical wires each having resistance R are connected as shown in the figure. Equivalent resistance between A and B is:
The most suitable material for making the core of an electromagnet is:
The nature of magnetic field line passing through the centre of current carrying circular loop is:
The most important safety method used for protecting home appliances from short circuiting or overloading is:
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
If R is the radius of curvature of a spherical mirror and f is its focal length, then:
→-
R = f
-
R = 2
-
$\text{R}=\frac{\text{f}}{2}$
-
R = 3f
What happens when white light passes through a glass prism:
The metallic pointer of a plotting compass gets deflected only when it is placed near a bar magnet because the pointer has:
Refraction of light by the earth’s atmosphere due to variation in air density is called:
What is the commercial unit of electrical energy?