Question # 1

One weber is equal to:

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N.A ²/m

N.m²/A

N.A/m

N.m/A

The value of Rydberg constant is:

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1.0749x10⁷m^-1

1.0974 x 10⁷ m^-1

1.974 x10⁶m^-1

1.0974 x 10^-7 m^-1

The conductor experience force, placed in magnetic above:

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Move towards weaker part of field

Move towards stronger part of field

Remains at rest

Move upwards in space

Energy density of an inductor is:

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UM=1/2μ_∘/B²

Um = 2μ_∘/B

UM = 1/2B²/μ_∘

Um = 2B²/μ_∘

The current induced can be increased by:

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop bay coi of many turns

All of above

When a PN-Junction is reverse biased the depletion region is.

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Widened

Narrowed

Normal

None of these

1 tesla =

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1 MAm^-1

1NA^-1m

1NA^-1m^-1

None of above

The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance

The value of Stefan is constant is:

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4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

The induced emf in a coil is proportional to:

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Magnetic flux through the coil

Rate of change of Magnetic flux through the coil

Area of the coil

Product of magnetic flux flux and area of the coil

The color code of "Green"

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8

3

5

7

The radio active nuclide ₈₆Ra²²⁸ decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is:

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₆₄X²²⁰

₈₆X²²²

₈₄X²¹⁶

₈₈X²¹⁵

What is the resistance of carbon resistor which has band brown black brown.

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100 Ohm

1000 Ohm

10 Ohm

1.0 Ohm

A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:

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q=Q/4

q=Q/2

q=Q

None of these

Charge on an electron was determined by

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Ampere

Millikan

Maxwell

Bohr

Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.

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10 kelvin

70 kelvin

200 kelvin

35 kelvin

An ideal current source shall have resistance

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Zero

Finite but not zero

Infinite

Depend upon requirement

In CRO, the output waveform of time base generator is

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Circular

Square

Sinusoidal

Saw-toothed

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