Question:
The development of electromagnetism lead to the invention of
The development of electromagnetism lead to the invention of
Updated On: Apr 5, 2025
- electric bulb
- electric geyser
- battery
- dynamo
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Correct answer: dynamo
Explanation:
The development of electromagnetism led to the invention of the dynamo, a device that converts mechanical energy into electrical energy using the principle of electromagnetic induction.
Michael Faraday discovered electromagnetic induction, which is the basic working principle behind dynamos and electric generators.
Other options:
- Electric bulb: works on the principle of heating effect of electric current.
- Electric geyser: uses the heating effect of current, not directly related to electromagnetism.
- Battery: produces electricity through chemical reactions, not based on electromagnetism.
Hence, the correct answer is: dynamo.
Was this answer helpful?
0
0
Top Questions on Moving charges and magnetism
- (a) State Faraday’s law of electromagnetic induction and explain the role of the negative sign in its expression.
(b) Explain, with an example, that Lenz’s law is consistent with the law of conservation of energy.- CBSE CLASS XII - 2025
- Physics
- Moving charges and magnetism
- (i) A rectangular loop of sides \( l \) and \( b \) carries a current \( I \) clockwise. Write the magnetic moment \( \vec{m} \) of the loop and show its direction in a diagram.
(ii) The loop is placed in a uniform magnetic field \( \vec{B} \) and is free to rotate about an axis which is perpendicular to \( \vec{B} \). Prove that the loop experiences no net force, but a torque \( \vec{\tau} = \vec{m} \times \vec{B} \).- CBSE CLASS XII - 2025
- Physics
- Moving charges and magnetism
- Assertion (A): The deflection in a galvanometer is directly proportional to the current passing through it.
Reason (R): The coil of a galvanometer is suspended in a uniform radial magnetic field.- CBSE CLASS XII - 2025
- Physics
- Moving charges and magnetism
- A particle of charge \( q \) is moving with a velocity \( \vec{v} \) at a distance \( d \) from a long straight wire carrying a current \( I \) as shown in the figure. At this instant, it is subjected to a uniform electric field \( \vec{E} \) such that the particle keeps moving undeviated. In terms of unit vectors \( \hat{i}, \hat{j}, \) and \( \hat{k} \), find:
the magnetic field \( \vec{B} \),
the magnetic force \( \vec{F}_m \), and
the electric field \( \vec{E} \) acting on the charge.
- CBSE CLASS XII - 2025
- Physics
- Moving charges and magnetism
- A charged particle is moving in a circular path with velocity \( \vec{V} \) in a uniform magnetic field \( \vec{B} \). It is made to pass through a sheet of lead and as a consequence, it loses one-half of its kinetic energy without change in its direction. How will:
1. the radius of its path change? 2. its time period of revolution change?- CBSE CLASS XII - 2025
- Physics
- Moving charges and magnetism
View More Questions
Questions Asked in AP POLYCET exam
- If assumed mean of a data is 47.5, \( \sum f_i d_i = 435 \) and \( \sum f_i = 30 \), then mean of that data is:
- AP POLYCET - 2025
- Arithmetic Mean
- Area of a sector of a circle with radius 4 cm and angle 30° is (use \( \pi = 3.14 \)):
- The points \( (1,5), (2,3) \) and \( (-2, -11) \) form a:
- A prime number \( p \) divides \( a^2 \) where \( a \) is a positive integer, then
- AP POLYCET - 2025
- Prime and Composite Numbers
- A pair of linear equations \( a_1 x + b_1 y + c_1 = 0 \) and \( a_2 x + b_2 y + c_2 = 0 \) is such that \( \frac{a_1}{a_2} \neq \frac{b_1}{b_2} \), then they are:
- AP POLYCET - 2025
- Linear Equations
View More Questions