1)The current in a 125 mH inductor changes

with time as I = b t2 − a t.

With a = 11 A/s and b = 7 A/s2, find

the magnitude of the induced emf, |E|, at

t = 0.5 s.

Answer in units of V.

2)At what time is the emf zero?

Answer in units of s.

3)Calculate the resistance in an RL circuit in

which L = 1.67 H and the current increases to 85.2% of its final value in 4.57 s.

Answer in units of Ohm

.

with time as I = b t2 − a t.

With a = 11 A/s and b = 7 A/s2, find

the magnitude of the induced emf, |E|, at

t = 0.5 s.

Answer in units of V.

2)At what time is the emf zero?

Answer in units of s.

3)Calculate the resistance in an RL circuit in

which L = 1.67 H and the current increases to 85.2% of its final value in 4.57 s.

Answer in units of Ohm

.

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