LR Circuits: The figure shows a circuit. The ideal battery has a constant terminal voltage of ? = 27 V, the inductance is L = 0.40 H, and the resistances are R1 = 12 ? and R2 = 9.0 ?. Initially the switch S is open with no currents flowing. Then the switch is suddenly closed.(a) What is the current in the resistor R1 the instant after the switch is closed?(b) After leaving the switch has been closed for a very long time, it is opened again. Just after it is opened, what is the current in R1?

Fill in the blank(s) with the appropriate word(s).


(a) 2.3 A (b) 3.0 A

Physics & Space Science

You might also like to view...

Saturn is the largest and most massive of the Jovian planets

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

Slanting Surfaces With Friction: A 50.0-kg block is being pulled up a 16.0° slope by a force of 250 N that is parallel to the slope. The coefficient of kinetic friction between the block and the slope is 0.200. What is the acceleration of the block?

A. 0.528 m/s2 B. 0.158 m/s2 C. 0.412 m/s2 D. 0.983 m/s2 E. 0.260 m/s2

Physics & Space Science

Io's volcanoes contribute material to a ________ around the planet Jupiter's equator

Fill in the blank(s) with correct word

Physics & Space Science

What is meant by the wavelength of light? By its frequency? Show how they are related to each other

What will be an ideal response?

Physics & Space Science