Question
The working of dynamo is based on principle of(a) Electromagnetic induction(b) Conversion of energy into electricity(c) Magnetic effects of current(d) Heating effects of current
✓
Answer
(a) Electromagnetic induction
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
In the figure the charge $Q$ is at the centre of the circle. Work done is maximum when another charge is taken from point $P$ to
→The expression of Y in the above circuit is:
The magnetic dipole moment of a current loop is independent of:
Which of the following is coldest planet(a) Mercury(b) Pluto(c) Earth (d) Venus
The most penetrating radiation out of the following is(a) X-rays (b) β -rays(c) α - particles(d) γ - rays
When no current is passed through a conductor?
Which of the following spectral series in hydrogen atom give spectral line of 4860 Å (a) Lyman(b) Balmer(c) Paschen(d) Brackett
A particle executes simple harmonic motion with a frequency v. The frequency with which the kinetic energy oscillates is:
→- $\frac{\text{v}}{2}$
- v
- 2v
- zero
Assertion : In meter bridge experiment, a high resistance is always connected in series with a galvanometer.
Reason : As resistance increases current through the circuit increases.(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.
Reason : As resistance increases current through the circuit increases.(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.
Consider the equations $\text{P}=\lim_\limits{\triangle\text{s}\rightarrow0}\frac{\text{F}}{\triangle\text{s}}$ and $\text{P}_1-\text{P}_2-\text{pgz}$ In an elevator accelerating upward.
→