A current of 2 A flows in a system of conductors as shown. The potential difference ( will be
|
(a) +2V |
(b) +1V |
(c) -1V |
(d) -2V |
A current of 2 A flows in a system of conductors as shown. The potential difference ( will be
|
(a) +2V |
(b) +1V |
(c) -1V |
(d) -2V |
(b) +1V
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You are given three bulbs of 25, 40 and 60 watt. Which of them has lowest resistance
|
(a) 25 watt bulb |
(b) 40 watt bulb |
|
(c) 60 watt bulb |
(d) Information is insufficient |
Two slits, 4 mm apart, are illuminated by light of wavelength 6000 Å. What will be the fringe width on a screen placed 2m from the slits
|
(a) 0.12 mm |
(b) 0.3 mm |
(c) 3.0 mm |
(d) 4.0 mm |
A current of 0.1 A circulates around a coil of 100 turns and having a radius equal to 5cm. The magnetic field set up at the centre of the coil is (m0 = 4π × 10–7 weber/amp-metre)
|
(a) 2 × 10–5 Tesla |
(b) 4 × 10–5 Tesla |
(c) 8π × 10–5 Tesla |
(d) 4π × 10–5 Tesla |
The electric field inside a spherical shell of uniform surface charge density is
|
(a) Zero |
|
(b) Constant, less than zero |
|
(c) Directly proportional to the distance from the centre |
|
(d) None of the above |
In the given circuit the current I1 is

|
(a) 0.4 A |
(b) – 0.4 A |
(c) 0.8 A |
(d) – 0.8 A |
A charge of 1C is moving in a magnetic field of 0.5Tesla with a velocity of 10m/sec Perpendicular to the field. Force experienced is
|
(a) 5 N |
(b) 10 N |
(b) 10 N |
(d) 0 N |