Two circuits contain an emf produced by a moving metal rod, like that shown in t
ID: 1436344 • Letter: T
Question
Two circuits contain an emf produced by a moving metal rod, like that shown in the drawing. The speed of the rod is the same in each circuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2. The circuits are otherwise identical. The resistance of the light bulb in circuit 1 is 52 ?, and that in circuit 2 is 104 ?. Determine (a) the ratio ?1/?2 of the emfs and (b) the ratio I1/I2 of the currents in the circuits. (c) If the speed of the rod in circuit 1 were twice that in circuit 2, what would be the ratio P1/P2 of the powers in the circuits?
(a) ?1/?2 = (b) I1/I2 = (c) P1/P2 = Conducting railExplanation / Answer
Two circuits contain an emf produced by a moving metal rod,
like that shown in the drawing. The speed of the rod is
the same in each circuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
The circuits are otherwise identical.
The resistance of the light bulb in circuit 1 is 52, and that in circuit 2 is104 .
Determine
(a) the ratio 1/2 of the emfs
k1 = 1/2 = 1.00
(b)
the ratio I1/I2 of the currents in the circuits
k2 = (1/52)/(1/104) = 104/52 = 2.00
(c)
If the speed of the rod in circuit 1 were twice that in circuit 2, what would be the ratio P1/P2 of the powers in the
circuits?
speed V
k3 = ((2)^2/R)/(^2/2R) = 4*2 = 8.00
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.