MCQ
An electric bulb works on the principle of :
  • A
    Archimedes
  • Heating effect of current
  • C
    Magnetic effect of current
  • D
    None of these

Answer

Correct option: B.
Heating effect of current

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

Listed below are the locations of certain elements in groups and periods of the periodic table. Arrange these elements in the expected order of increasing non-metallic character:
  1. Element in the fourth period and group IV A
  2. Element in the third period and group VI A
  3. Element in the fourth period and group VI A
  4. Element in the six period and group III A
  5. Element in the second period and group VII A
The correct order is:
Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained? (You may use colour guide given in Figure:
How long will the coal reserves last?
Select the group which shares the maximum number of common characters :
Choose the incorrect statement from the following regarding magnetic lines of field :
A student takes four test tubes marked $P, Q, R$ and $S$ of $25 mL$ capacity and fill $10 mL$ of distilled water in each. He dissolves one spoon full of four different salts in each as $-\ce{KCl}$ in $\mathrm{P}, \mathrm{NaCl}$ in $\mathrm{Q}, \mathrm{CaCl}_2$ in $R$ and $\mathrm{MgCl}_2$ in $S$ . He then adds about $2 mL$ of a sample of soap solution to each of the above test tubes. On shaking the contents of each of the test tubes, he is likely to observe a good amount of lather $($foam$)$ in the test tubes marked :
Which of the following is an incorrect statement?
What is the maximum resistance which can be made using five resistors each of $\frac{1}{5}\Omega\ ?$
In a neuron, conversion of electrical signal to a chemical signal occurs at/ in:
Which of the following acts as both endocrine and exocrine gland ?