MCQ
The current in the circuit shown in the figure considering ideal diode is


- A200A
- B$2 \times 10^{-4} A$
- C20A
- D$2 \times 10^{-3} A$

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A diver at a depth of 12m in water (μ = 4/3) sees the sky in a cone of semi-vertical angle
|
(a) |
(b) |
(c) |
(d) 90° |
A current of 2 A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is
|
(a) 0.5 Ω |
(b) 2 Ω |
(c) 4 Ω |
(d) 20 Ω |
Two circuits have mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current in the other circuit changes from 0 to 20 A in 0.02 s
|
(a) 240 V |
(b) 230 V |
(c) 100 V |
(d) 300 V |