- AAmpere's law.
- BOhm's law.
- CFaraday's law.
- DCoulomb's law.
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Four identical electrical lamps are labelled 1.5V, 0.5A which describes the condition necessary for them to operate at normal brightness. A 12V battery of negligible internal resistance is connected to lamps as shown, then
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(a) The value of R for normal brightness of each lamp is (3/4) W |
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(b) The value of R for normal brightness of each lamp is (21/4) W |
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(c) Total power dissipated in circuit when all lamps are normally bright is 24W |
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(d) Power dissipated in R is 21W when all lamps are normally bright |
For the Bohr's first orbit of circumference 2πr, the de-Broglie wavelength of revolving electron will be
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(a) 2πr |
(b) πr |
(c) |
(d) |
The resistance of a reverse biased P-N junction diode is about
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(a) 1 ohm |
(b) |
(c) |
(d) |
A passenger in an aeroplane shall:
$\text{F}=\frac{\text{K.}(\text{q}_1\times\text{q}_2)}{\text{r}^2}$
This is given by which law?