- ACurrent that flows from lower potential to higher potential.
- BThe current which remains static.
- CCurrent constituted by the flow of ions.
- DCurrent that flows from higher potential to lower potential.
Explanation:
The current that flows from a point at the higher (positive) potential to a point at lower (negative) potential is called conventional current. The direction of motion of positive charges is taken as the direction of electric current.
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The phase difference between input and output voltages of a CE circuit is
|
(a) 0o |
(b) 90o |
(c) 180o |
(d) 270o |
To measure which of the following, is a tangent galvanometer used
| (a) Charge | (b) Angle | (c) Current | (d) Magnetic intensity |
The de-Broglie wavelength of a neutron at 27oC is l. What will be its wavelength at 927oC
|
(a) l / 2 |
(b) l / 3 |
(c) l / 4 |
(d) l / 9 |
The distance CP is the:

Assertion : Semiconductors do not Obey's Ohm's law.
Reason : Current is determined by the rate of flow of charge carriers.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If assertion is false but reason is true. |
Two equal point charges are fixed at x = -a and x = +a on the x-axis. Another point charge Q is placed at the origin. The Change in the electrical potential energy of Q, when it is displaced by a small distance x along the x-axis, is approximately proportional to
|
(a) x |
(b) |
(c) |
(d) 1/x |