Explanation:
According to Ohm's law, the potential difference across a conductor is directly proportional to the current through it.
V = IR
Hence the curve is a straight line passing through origin.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A beam of ions with velocity 2 
enters normally into a uniform magnetic field of 4
If the specific charge of the ion is 5 
, then the radius of the circular path described will be
|
(a) 0.10 m |
(b) 0.16 m |
(c) 0.20 m |
(d) 0.25 m |
Two voltameters, one of copper and another of silver, are joined in parallel. When a total charge q flows through the voltameters, equal amount of metals are deposited. If the electrochemical equivalents of copper and silver are 
and 
respectively the charge which flows through the silver voltameter is
|
(a) |
(b) |
(c) |
(d) |
The number of photons of wavelength 540 nm emitted per second by an electric bulb of power 100W is (taking h = 6 
|
(a) 100 |
(b) 1000 |
(c) 3 |
(d) 3 |
