Point charge 
and 
are kept at points x = 0 and x = 6 respectively. Electrical potential will be zero at points
|
(a) x = 2 and x = 9 |
(b) x = 1 and x = 5 |
(c) x = 4 and x = 12 |
(d) x = -2 and x = 2 |
(c) x = 4 and x = 12
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The transformation ratio in the step-up transformer is
|
(a) 1 |
|
(b) Greater than one |
|
(c) Less than one |
|
(d) The ratio greater or less than one depends on the other factors |
If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be
|
(a) 50 Hz |
(b) 70.7 Hz |
(c) 100 Hz |
(d) 25 Hz |
Assertion : Two bulbs of same wattage, one having a carbon filament and the other having a metallic filament are connected in series. Metallic bulbs will glow more brightly than carbon filament bulb.
Reason : Carbon is a semiconductor.
|
(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 the assertion and reason both are false. |