Intensity of an electric field E due to a dipole, depends on distance r as
|
(a) E ∝ |
(b) E ∝ |
(c) E ∝ |
(d) E ∝ |
Intensity of an electric field E due to a dipole, depends on distance r as
|
(a) E ∝ |
(b) E ∝ |
(c) E ∝ |
(d) E ∝ |
(b) E ∝ ![]()
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The number of turns in the primary coil of a transformer is 200 and the number of turns in the secondary coil is 10. If 240 volt AC is applied to the primary, the output from the secondary will be
|
(a) 48 V |
(b) 24 V |
(c) 12 V |
(d) 6 V |
Sum of the two binary numbers
and
is
|
(a) |
(b) |
(c) |
(d) |
In the given figure, when galvanometer shows no deflection, the current (in ampere) flowing through 5Ω resistance will be
|
(a) 0.5 |
(b) 0.6 |
(c) 0.9 |
(d) 1.5 |
Two different loops are concentric and lie in the same plane. The current in the outer loop is clockwise and increasing with time. The induced current in the inner loop then, is
|
(a) Clockwise |
|
(b) Zero |
|
(c) Counter clockwise |
|
(d) In a direction that depends on the ratio of the loop radii |
Three bulbs of 40 W, 60 W, 100 W are arranged in series with 220 volt supply which bulb has minimum resistance
|
(a) 100 W |
(b) 40 W |
(c) 60 W |
(d) Equal in all bulbs |
In Milikan's oil drop experiment, a charged drop falls with terminal velocity V. If an electric field E is applied in vertically upward direction then it starts moving in upward direction with terminal velocity 2V. If magnitude of electric field is decreased to
, then terminal velocity will become
|
(a) |
(b) V |
(c) |
(d) 2V |
