A 0.650-m-long metal bar is pulled to the right at a steady 6.0 m/s perpendicula

Question

A 0.650-m-long metal bar is pulled to the right at a steady 6.0 m/s perpendicular to a uniform, 0.550-T magnetic field. The bar rides on parallel metal rails connected through a 25-, resistor (Figure 1) , so the apparatus makes a complete circuit. Ignore the resistance of the bar and the rails.

Part A

Calculate the magnitude of the emf induced in the circuit.

Express your answer with the appropriate units.

Part B

Find the direction of the current induced in the circuit.

counterclockwise

Part C

Calculate the current through the resistor.

Express your answer with the appropriate units.

counterclockwise

Explanation / Answer

(a)

the magnitude of the emf induced in the circuit is

e= Blv= 0.550 * 0.650 * 6 = 2.145 V

(b)

by the Lenz's law induced current must be in counter clockwise

(c)

the current through the resistor.

I = e/R =  2.145 V/25-, =0.0858 A

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.