- AComposition type resistor and film type resistor.
- BRheostat and film type resistor.
- CRheostat and variable resistor.
- DComposition type resistor and rheostat.
Explanation:
Carbon resistors are of two types composition type resistor and film type resistor.
There are a number of different types of fixed resistor:
Carbon composition: These types were once very common, but are now seldom used.
Carbon film: This resistor type is formed by "cracking" a hydrocarbon onto a ceramic former.
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The half-life of a radioactive substance is 40 years. How long will it take to reduce to one fourth of its original amount and what is the value of decay constant
| (a) 40 year, 0.9173/year | (b) 90 year, 9.017/year |
| (c) 80 year, 0.0173 year | (d) None of these |
$\frac{\text{k}_1}{\text{k}_2}$
$\sqrt{\frac{\text{k}_1}{\text{k}_2}}$
$\frac{\text{k}_2}{\text{k}_1}$
$\sqrt{\frac{\text{k}_2}{\text{k}^1}}$
Two particles each of mass m and charge q are attached to the two ends of a light rigid rod of length 2R. The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod is
|
(a) |
(b) |
(c) |
(d) |
A plane glass slab is kept over various coloured letters, the letter which appears least raised is
|
(a) Blue |
(b) Violet |
(c) Green |
(d) Red |
What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV
|
(a) 2.6 V |
(b) 3.6 V |
(c) 0.8 V |
(d) 1.4 V |
$\oint\limits_\text{S}\text{E.ds}=\frac{\text{q}}{\in_0}$
Which of the following statements is correct?
$\text{Zero.}$
$\text{Mga}$
$\text{Mga}\sin\theta$
$\frac{1}{2}\text{Mga}\sin\theta$