MCQ
An alternating electric current is represented by equation $I=0.6 sin 100 \pi t$. The frequency of alternating current is :
  • A
    $50 \pi$
  • 50
  • C
    $100 \pi$
  • D
    100

Answer

Correct option: B.
50
B

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

On heating a liquid, the refractive index generally(a) Decreases (b) Increases or decreases depending on the rate of heating(c) Does not change(d) Increases
 
 
 
 
Given below are four logic gate symbol $($figure$).$ Those for $\text{OR, NOR}$ and $\text{NAND}$ are respectively
Velocity of light in glass whose refractive index with respect to air is $1.5$ is $2 \times 10^8 \mathrm{~m} / \mathrm{s}$ and in certain liquid the velocity of light found to be $2.5 \times 10^8$ $\mathrm{m} / \mathrm{s}$. The refractive index of the liquid with respect to air is
The particle nature of light is not confirmed by:
The electric bulbs have tungsten filaments of same length. If one of them gives 60 watt and other 100 watt, then(a) 100 watt bulb has thicker filament(b) 60 watt bulb has thicker filament(c) Both filaments are of same thickness(d) It is possible to get different wattage unless the lengths are different
 
 
 
 
An electron jumps from $5^{\text {th }}$ orbit to $4^{\text {th }}$ orbit of hydrogen atom. Taking the Rydberg constant as $10^7$ per metre. What will be the frequency of radiation emitted
An electron enters between two horizontal plates separated by $2\ mm$ and having a potential difference of $1000 V$ . The force on electron is
Consider the following two statements:
  1. The linear momentum of a particle is independent of the frame of reference.
  2. The kinetic energy of a particle is independent of the frame of reference.
  1. Both A and B are true.
  2. A is true but B is false.
  3. A is false but B is true.
  4. Both A and B are false.
Ten identical cells connected in series are needed to heat a wire of length one meter and radius ‘r’ by 10ºC in time ‘t’. How many cells will be required to heat the wire of length two meter of the same radius by the same temperature in time ‘t’?
If induction of magnetic field at a point is $B$ and energy density is $U$ then which of the following graphs is correct