Explanation:
Work done by the electrostatic force is independent of the path followed by it, and it depends only on the initial and final positions. For example, work done in moving a unit positive charge in a closed loop of an electric field is zero. So,electrostatic force is a conservative force.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Which of the following statements about the Bohr model of the hydrogen atom is false
|
(a) Acceleration of electron in n = 2 orbit is less than that in n = 1 orbit |
|
(b) Angular momentum of electron in n = 2 orbit is more than that in n = 1 orbit |
|
(c) Kinetic energy of electron in n = 2 orbit is less than that in n = 1 orbit |
|
(d) Potential energy of electron in n = 2 orbit is less than that in n = 1 orbit |
Plate voltage of a triode is increased from 200 V to 225 V. To maintain the plate current, change in grid voltage from 5V to 5.75 V is needed. The amplification factor is
|
(a) 40 |
(b) 45 |
(c) 33.3 |
(d) 25 |
Which of the following statement is true
|
(a) |
(b) |
|
(c) |
(d) |
When a current passes through a wire whose different parts are maintained at different temperatures, evolution or absorption of heat all along the length of wire is known as
|
(a) Joule effect |
(b) Seebeck effect |
(c) Peltier effect |
(d) Thomson effect |
