- ADecreasing resistance and increasing inductance
- BDecreasing inductance and increasimg resistance
- CIncreasing both inductance and resistance
- DDecreasing both inductance and resistance
Explanation:
In an AC circuit, power loss can be minimized by decreasing in resistance and by increasing in inductance.
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Which of the following shows green house effect
|
(a) Ultraviolet rays |
(b) Infrared rays |
(c) X-rays |
(d) None of these |
Which one of the following is true in photoelectric emission
|
(a) Photoelectric current is directly proportional to the amplitude of light of a given frequency |
|
(b) Photoelectric current is directly proportional to the intensity of light of a given frequency at moderate intensities |
|
(c) Above the threshold frequency, the maximum K.E. of photoelectrons is inversely proportional to the frequency of incident light |
|
(d) The threshold frequency depends upon the wavelength of incident light |
$\frac{\triangle\text{l}}{\text{l}}$
$\Big(\frac{\triangle\text{l}}{\text{l}}\Big)^2$
$\sqrt{\frac{\triangle\text{l}}{\text{l}}}$
None of these.
Which is a wrong statement
|
(a) The Wheatstone bridge is most sensitive when all the four resistances are of the same order |
|
(b) In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge |
|
(c) Kirchhoff's first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge |
|
(d) The rheostat can be used as a potential divider |
In the following Wheatstone bridge P/Q = R/S. If key K is closed, then the galvanometer will show deflection
|
(a) In left side |
(b) In right side |
(c) No deflection |
(d) In either side |