Which factor does NOT affect the magnitude of motional EMF in a conductor?
The resistance of the conductor
To determine which factor does NOT affect the magnitude of motional EMF in a conductor, we must first understand the formula for calculating motional EMF:
EMF = Bℓv sin(θ)
where:
- B is the magnetic field strength.
- ℓ is the length of the conductor.
- v is the speed of the conductor.
- θ is the angle between the conductor's direction of motion and the magnetic field.
Let's analyze the provided factors:
- The speed of the conductor: Since speed (v) is directly included in the formula, it does affect the magnitude of motional EMF.
- The length of the conductor: As the length (ℓ) is also part of the equation, it affects the magnitude of motional EMF.
- The resistance of the conductor: The formula for motional EMF does not involve the resistance of the conductor. Thus, resistance does not affect the magnitude of motional EMF.
- The angle between the conductor's velocity and the magnetic field: The angle (θ) affects the magnitude through the sine function. Therefore, it influences the motional EMF.
Given this analysis, the resistance of the conductor does NOT affect the magnitude of motional EMF.
Important Questions from Electromagnetic Waves
Consider the two statements given below :
Statement-1: Infrared waves are also called heat waves.
Statement-2: Water molecules readily absorb infrared waves.
Select the correct answer using the code given below:
Consider the following statements about visible light, UV light and X-rays:
1. The wavelength of visible light is more than that of X-rays.
2. The energy of X-ray photons is higher than that of UV light photons.
3. The energy of UV light photons is less than that of visible light photons.
Which of the statements given above is/are correct?The wavelength of X-rays is of the order of
Which of the followings are the characteristics of electromagnetic waves?
1) They are elastic waves.
2) They can also move in a vacuum.
3) They have electric and magnetic components that are mutually perpendicular.
4) They move with a speed equal to 3 lakh meters per second.
Select the correct answer using the code given below:
Which of the following devices is based on the phenomenon of electromagnetic induction?
