Question

If ε and ∆t are the induced EMF and time respectively, then the change in magnetic flux is given by

• A. \(\frac{ ε}{\Delta t}\)
• B. \(ε∆t\)
• C. \(\sqrt{\frac{ ε}{\Delta t}}\)
• D. \(\sqrt{ε∆t}\)

Answer 1

The Correct Option is B

According to Faraday’s Law of Electromagnetic Induction, the magnitude of induced EMF is given by:

\[ \varepsilon = \frac{\Delta \Phi}{\Delta t} \]

Where:

• \( \varepsilon \) is the induced EMF
• \( \Delta \Phi \) is the change in magnetic flux
• \( \Delta t \) is the time over which the change occurs

Rearranging the formula to find \( \Delta \Phi \):

\[ \Delta \Phi = \varepsilon \cdot \Delta t \]

Correct Answer: \( \varepsilon \Delta t \)