Physics Electromagnetism NUMS 2023
PMDC Verified Question 21 of 58
The dimension of magnetic field strength is same as that of:
A
Magnetic flux
B
Magnetic induction
C
Work done
D
Magnetic force
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Magnetic induction
Concept:

In foundational physics terminology, several names describe the exact same underlying vector field denoted by \( \mathbf{B} \).

Solution:

  • The vector \( \mathbf{B} \) is heavily referenced in physics as either the "magnetic field", "magnetic flux density", or "magnetic induction".


  • Because "magnetic field strength" (when used colloquially to mean \( \mathbf{B} \)) refers to the exact same Tesla-measured phenomenon, it shares identical dimensions with Magnetic induction.


Why other options are incorrect:

Option A (Flux) is measured in Webers (\( \text{T} \cdot \text{m}^2 \)). Option C is Joules. Option D is Newtons. None of these share the unit of Tesla (\( \text{kg s}^{-2} \text{A}^{-1} \)).

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