Wire A is twice as long as wire B but is otherwise identical. Both have the same potential difference between their ends. How do the currents flowing in these wires compare?
A. /A = 4/B
B. /A = 2/B
C. /A = /B
D. /A = (1/2)/B
E. /A = (1/4)/B
F. Other (specify)
T. It is impossible to say given the provided information.
D. /A = (1/2)/B
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An ideal transformer steps down 120 V to 12. V and the 2630.-turn secondary supplies 12. A
(a) Determine the current in the primary. (b) Determine the turns ratio. (c) What is the ratio of output power to input power?
Instructions: On occasion, the notation 
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Given that 
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A.
B.
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Free Fall: Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.1 s. What was the speed of the ball at as it passed the top of the flagpole? Neglect air resistance.
A. 6.4 m/s B. 16 m/s C. 18 m/s D. 29 m/s E. 33 m/s
Power: A 120-V rms voltage at 60.0 Hz is applied across a capacitor and a 100-? resistor. If the impedance of this circuit is 200 ?, what is the average power of this circuit?
A. 278 W B. 72.0 W C. 36.0 W D. 100 W E. 200 W