Which o f the following is true with respect to Rogers spiral experiment?
- It uses two wires of same length
- It uses two wires carrying same current
- It uses alternating current for experiment
- It uses mercury for experiment
The Correct Option is D
Solution and Explanation
Top Questions on Amperes circuital law
Consider the circuit shown :
The ammeter reads 0.9 A. Value of R is- JEE Main - 2024
- Physics
- Amperes circuital law
- In the given circuit, find the voltage drop VL in the load resistance RL
- WBJEE - 2023
- Physics
- Amperes circuital law
- A transistor is used in an amplifier circuit in common emitter mode. If the base current changes by 100μA, it brings a change of 10mA in collector current. If the load resistance is 2kΩ and input resistance is 1kΩ, the value of power gain is \(x×10^4\). The value of x is _______.
- JEE Main - 2022
- Physics
- Amperes circuital law
- A long straight wire with a circular cross-section having radius R, is carrying a steady current I. The current I is uniformly distributed across this cross-section. Then the variation of magnetic field due to current I with distance r (r < R) from its centre
- JEE Main - 2022
- Physics
- Amperes circuital law
- A thick current carrying cable of radius $'R'$ carries current $'I'$ uniformly distributed across its cross-section. The variation of magnetic field $B ( r )$ due to the cable with the distance $'r'$ from the axis of the cable is represented by :
- NEET (UG) - 2021
- Physics
- Amperes circuital law
Questions Asked in JKCET exam
- A force $ F = 3x^2 + 2x + 1 $ acts on a body in the $ x $ -direction. The work done by this force during a displacement from $ x = -1 $ to $ +1 $ is
- JKCET - 2019
- work, energy and power
- What is the colour of the flame on heating potassium in the flame of a Bunsen burner?
- JKCET - 2019
- GROUP 1 ELEMENTS
- Which of the following compounds is known as copper glance?
- JKCET - 2019
- General Principles and Processes of Isolation of Elements
- If $ a $ , $ b $ , $ c $ are the lengths of three edges of unit cell, $ \alpha $ is the angle between side $ b $ and $ c $ , $ \beta $ is the angle between side $ a $ and $ c $ and $ \gamma $ is the angle between side $ a $ and $ b $ , what is the Bravais Lattice dimensions of a tetragonal crystal?
- JKCET - 2019
- The solid state
- Specify the coordination number of the metal in $ [CoBr_2(en)_2]^+ $ .
- JKCET - 2019
- Isomerism in Coordination Compounds
Concepts Used:
Amperes circuital law
According to Ampere’s law, magnetic fields are related to the electric current that is produced in them. This law specifies that the magnetic field is associated with a given current or vice-versa, provided that the electric field doesn’t change with time.
Ampere’s circuital law can be written as the line integral of the magnetic field surrounding the closed loop which is equal to the number of times the algebraic sum of currents passing through the loop.
According to the second equation, if the magnetic field is integrated along the blue path, then it is equal to the current enclosed, I.
The magnetic field doesn’t vary at a distance r because of symmetry. The path length (in blue) in figure 1 has to be equal to the circumference of a circle,2πr.
SUBSCRIBE TO OUR NEWS LETTER
