Which terrestrial planet(s) have magnetic fields?
A) Earth and Venus
B) Earth only
C) all of them do
D) Earth and Mercury
Question 2
An AC circuit has a 100. ohm resistor in series with a 4.9 F capacitor and a 700. mH inductor. At what frequency does the circuit act like a pure resistance?
A) 86. Hz
B) 0.54 kHz
C) 1.9 mHz
D) 0.29 MHz
E) 12. mHz
