An electron has a charge of -1.6 times 10^-19 C and a mass of 9.1 times 10^-31 k

Question

An electron has a charge of -1.6 times 10^-19 C and a mass of 9.1 times 10^-31 kg. epsilon_o = 8.85 times 10^-12 F/m and mu_o = 4 pi times 10^-7 T m/A. An electron has an initial speed of 1.6 times 10^5 m/s. What is the magnitude of the necessary to stop it? A super capacitor has an area of 2.0 m^2. If the distance between its plates is 0 085 mm and the dielectric's constant is 120. then: What is the capacitance? The capacitor is charged up to 5.0 Volts. How much energy is stored it the capacitor? A resistance of 2.0 Ohm is subjected to 120V rms. What is the rms current flowing through the resistance? What is the power dissipated by the resistance? The 20,000 turn primary coil of a transformer receives 2.5 kV rms. The secondary coil outputs 5.0 V rms. Find the number of turns on the secondary coil. A 4.9 mu F capacitor is charged to 110 V. It is then discharged through an 8.8 k Ohm resistor. What is the voltage on the capacitor after 1.4 seconds? Ten flat wire loops carry a current of 2.8 A around the same center. If the loops have a radius of 8.5 cm, then what is the magnitude of the magnetic field in the center? A 10 mH inductor carries a current of 520 mA. What is the energy stored in the inductor? The current drops from 520 mA to 350 mA in 0.025 sec. What is the magnitude of the voltage in the coil? A person with wet hands has a total resistance of 2.5 k Ohm. If he is placed in series with a 15 k Ohm resistor, then: What is their series resistance? If 120 V rms is placed across this series resistance, then what is the current through this circuit?

Explanation / Answer

Using

0.mv^2 = eV

Where V is the voltage required

0.5*9.1*10^-31*(1.6*10^5)^2 = 1.6*10^-19V

V = 0.0728 V

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.