If the voltage amplitude across an 8.50-nF capacitor is equal to ...

[RODY.ELKHALIL]

If the voltage amplitude across an 8.50-nF capacitor is equal to 12.0 V when the current amplitude through it is 3.33 mA, the frequency is closest to:
 
  A) 32.6 kHz B) 5.20 MHz C) 32.6 Hz D) 5.20 kHz E) 32.6 MHz

Question 2

A proton is accelerated from rest through 0.50 kV. It then enters a uniform magnetic field of 0.30 T that is oriented perpendicular to its direction of motion.
 
  (a) What is the radius of the path the proton follows in the magnetic field? (b) How long does it take the proton to make one complete circle in the magnetic field?.

[cswans24]

Answer to Question 1

B

Answer to Question 2

(a) 11 mm (b) 0.22 s