Faraday's Law | MCQs

Explanation

For a straight wire, the induced current (I) depends on:

• The speed of movement of the wire (v): The faster the wire moves, the greater the induced current.
• The length of the wire (L): The longer the wire, the greater the induced current.
• The magnitude of the magnetic flux density (B): The stronger the magnetic field, the greater the induced current.

The induced current is given by Faraday's law of induction: I = -BLv

Where:

• I is the induced current
• B is the magnetic flux density
• L is the length of the wire
• v is the speed of movement of the wire

Explanation

Explanation

The induced EMF (ε) is given by:

ε = -N(dΦ/dt)

where N is the number of turns, Φ is the magnetic flux, and d/dt is the rate of change of flux.

ε = -600(8-5)/3 = 600V