Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
Diode is used as a/an
|
(a) Oscillator |
(b) Amplifier |
(c) Rectifier |
(d) Modulator |
(c) Rectifier
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A galvanometer having a resistance of 8 ohm is shunted by a wire of resistance 2 ohm. If the total current is 1 amp, the part of it passing through the shunt will be
|
(a) 0.25 amp |
(b) 0.8 amp |
(c) 0.2 amp |
(d) 0.5 amp |
The potential difference between point A & B is
|
(a) |
(b) |
(c) |
(d) 0 |
In a junction diode, the holes are due to
| (a) Protons | (b) Neutrons | (c) Extra electrons | (d) Missing of electrons |
The magnetic field due to a short magnet at a point on its axis at distance X cm from the middle point of the magnet is 200 Gauss. The magnetic field at a point on the neutral axis at a distance X cm from the middle of the magnet is
|
(a) 100 Gauss |
(b) 400 Gauss |
(c) 50 Gauss |
(d) 200 Gauss |
A cell of internal resistance r is connected to an external resistance R. The current will be maximum in R, if
|
(a) R = r |
(b) R < r |
(c) R > r |
(d) R = r/2 |
Faraday's laws are consequence of conservation of
|
(a) Energy |
(b) Energy and magnetic field |
|
(c) Charge |
(d) Magnetic field |