An LR circuit contains an ideal 60-V battery, a 51-H inductor having no resistance, a 21-? resistor, and a switch S, all in series. Initially, the switch is open and has been open for a very long time. At time t = 0 s, the switch is suddenly closed
When the voltage across the resistor is equal to the voltage across the inductor, what is the current in the circuit?
A) 0.86 A B) 1.7 A C) 1.1 A D) 0.57 A E) 1.4 A
E
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A Frenkel defect in an ionic material is a cation _____________and vacancy.
Fill in the blank(s) with the appropriate word(s).
Meters: A galvanometer with a coil resistance of 80 ? deflects full-scale for a current of 2.0 mA. What series resistance is required to convert it to a voltmeter reading full scale for 200 V.
A. 100 m? B. 0.80 m? C. 13 M? D. 250 k? E. 100 k?
The cause of Venus' slow rotation is unknown at present
Indicate whether the statement is true or false
The number 0.00325 × 10-8 cm can be expressed in millimeters as
A) 3.25 × 10-12 mm. B) 3.25 × 10-11 mm. C) 3.25 × 10-10 mm. D) 3.25 × 10-9 mm.