A wire of length 30cm is moved with a speed of 2ms-1 at right angles to a magnetic field of flux density 0.4T. calculate the emf induced in the wire

Assessment: WAEC SSCE - Physics - 2011 (Objective) Subject: Physics

Question 1 Report

A wire of length 30cm is moved with a speed of 2ms-1 at right angles to a magnetic field of flux density 0.4T. calculate the emf induced in the wire
Answer Details
The emf induced in a wire moving at right angles to a magnetic field is given by the equation: emf = B × l × v where B is the magnetic flux density, l is the length of the wire, and v is the velocity of the wire. Plugging in the given values, we have: emf = 0.4T × 0.3m × 2ms-1 = 0.24V Therefore, the emf induced in the wire is 0.24V. The correct option is: 0.24V
Read lesson note on Force On A Current-Carrying Conductor In A Magnetic Field (JAMB)
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