Question # 1

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

Terminal potential difference is greater than emf of the cell when

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Circuit is open

Circuit is closed

small battery is charged by bigger battery

None of these

B2/2p is the expression of.

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Lenz's law

Magnetic energy

Magnetic energy density

Back emf

Electric current produces magnetic field, was suggested by.

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Faraday

Oersted

Henry

Lenz

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

The material whose resistivity becomes zero below a certain temperature

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Conductors

Semi conductors

Super conductors

Insulators

The "toner" of photocopier is given:

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Positive charge

Negative charge

Remains neutral

All of above

For an atom of hydrogen atom the radius of the first orbit is given by:

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H/me²

me/4h²

h2/4π² kme²

h² me²

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

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Maximum

Minimum

Zero

Negative

Doping is made comparatively larger in

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Emitter

Base

Collector

P -type semi conductor

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

The conductors having the conductivity of the order of

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The binding energy for_________ is maximum.

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Copper

Glass

Iron

Aluminum

When Ohm meter gives full scale deflection it indicates.

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Zero resistance

Infinite resistance

Small resistance

Very High resistance

Electric potencial of earth is taken to be zero because the earth is good:

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Semiconductor

Conductor

Insulator

Dielectric

The sensor of light is.

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Transistor

LED

Diode

Light dependent resistance

Absorbed Dose 'D' is defined as

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m/E

E/C

C/m

E/m

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