Question 1
Through what potential difference must an electron (starting from rest) be accelerated if it is to reach a speed of 3.0 × 107 m/s?
◦
5.8 kV
◦
2.6 kV
◦
7.1 kV
◦
8.6 kV
◦
5.1 kV
Question 2
Two charges lie on the x axis, +2q at the origin, and −3q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is
◦
1.0 m.
◦
2.0 m.
◦
2.5 m.
◦
3.0 m.
◦
4.0 m.