A series LR circuit contains an emf source of 14V having no internal resistance, a resistor, a 34 H inductor having no appreciable resistance, and a switch
If the emf across the inductor is 80% of its maximum value 4.0 s after the switch is closed, what is the resistance of the resistor?
A) 14 ?
B) 1.9 ?
C) 1.5 ?
D) 5.0 ?
B
You might also like to view...
Assume a gram of a substance marketed as "Pure Energy" is annihilated by a gram of a second substance "Anti-Pure Energy." How long would the energy released power a city which uses 109 watts of power?
a. 40 hrs b. 25 hrs c. 50 hrs d. 65 hrs e. 50000 hrs
You are presently exerting a gravitational force on the Earth
a. True b. False Indicate whether the statement is true or false
I observe a galaxy that is 100 million light years away. Which of the following do I see?
A) the light from the galaxy as it is today, and it is redshifted B) the light from the galaxy as it was 100 million years ago, and it is redshifted C) the light from the galaxy as it is today, and it is blueshifted D) the light from the galaxy as it was 100 million years ago, and it is blueshifted E) Nothing: the galaxy lies beyond the cosmological horizon.
When a mineral's surface reflects light in a manner similar to a smooth metal, the mineral is said to have a(n) ______________ luster
Fill in the blank(s) with correct word