(a) In Figure 30-28a, assume that the switch S has been inposition A for sufficient time so that a steady currentI0= V0/R flows through the resistor R. Attime t=0. the switch is quickly switched to position B and thecurrent through R decays according to I=I0*e-t/Ï.
Show that the maximum emf induced in the inductor during thistime period equals the battery voltage V0.
(b) In Figure 30-28b, assume that the switch has been inposition A for sufficient time so that a steady currentI0= V0/R flows through the resistor R. Attime t=0. the switch is quickly switched to position B and thecurrent decays through resistor R' (which is much greater than R)according to I=I0*e-t/Ï'.
Show that the maximum emf induced in the inductor during thistime period is (R'/R)V0. If R'= 55R and V0=120V, determine emf max.
(a) In Figure 30-28a, assume that the switch S has been in position A for sufficient time so that a steady current I0= V0/R flows through the resistor R. At time t=0. the switch is quickly switched to position B and the current through R decays according to I= I0*e-t/?. Show that the maximum emf induced in the inductor during this time period equals the battery voltage V0.(b) In Figure 30-28b, assume that the switch has been in position A for sufficient time so that a steady current I0= V0/R flows through the resistor R. At time t=0. the switch is quickly switched to position B and the current decays through resistor R' (which is much greater than R) according to I=I0*e-t/?'. Show that the maximum emf epsilon max induced in the inductor during this time period is (R'/R)V0. If R'= 55R and V0= 120V, determine epsilonmax.