Question # 1

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

Conductance is the reciprocal of.

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Capacitance

Inductance

Resistance

Admittance

In electric magnetism , the additional fundamental quantity that is chosen as a basic unit is called.

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Electric potential

Electric fierce

Electric charge

Magnetic force

If a resistance is connected in parallel with a galvanometer the resulting instrument is called.

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A voltmeter

An ammeter

A wattmeter

A potentiometer

When ever current is drawn from a cell Its terminal potential difference and emf become

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Different

Same

Zero

Negative

The SI unit of mutual induction a

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Vs-1 A-1

V m -1 A-1

Henry

Tesla

Which law states that magnetization is inversely proportional to temperature for a fixed value fo the field.

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Curie's law

Voltmeter

Ammeter

Wattmeter

A transformer is used to.

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Convert D.C. into A.C.

Convert A.C. in to D.C.

Obtain A.C. voltage

Enhance the power

One weber is equal to.

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N A-1

N m-1 A

N mA-1

N m-1 A-1

Self inductances of solenoid is

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Directly proportional to the current flowing through the wire

Directly proportional to its length

Inversely proportional to area of corss section

Directly proportional to number of turns

Two wires P and Q each of same length and the same material are connected in parallel to a battery The diameter of P is half that of Q What fraction of the total current passes through P.

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0.02

0.25

0.33

0.50

A gallium atom is.

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Monvalent

Diavalent

Trivalent

Pentavalent

A type of resistor whose resistance varies significantly with temperature is.

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Thermistor

Thermocouple

Strain gauge

Potentiometer

Which of the following is not the SI unit of magnetic flux density.

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Wb m2

N A-1 m-1

Tesla

N mA-1

Resistance and resistivity of a substance

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Increase with rise in temperature

Decrease with rise in temperature

Remains same at every temperature

Increases at high voltage

A resistance is a device which

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Acids the flow of current is a circuit

Converts electrical energy to heat

Is a type of charge pump

Is like a switch

A device consisting two different conductors that produce a voltage proportional to the temperature difference between either end of the pair of conductors is a.

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Thermistor

Thermocouple

Strain gauge

Potentiometer

The direction of induced emf during electromagnetic induction can be determined by making use of.

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Faraday's law

Ampere;s law

Lenz's law

Laplace law

In any L-C-R circuit

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Current lags the applied voltage

Current leads the applied voltage

Current sometimes leads and sometimes lags the applied voltage

Current remains in phase with voltage

If we double both the current and the voltage in circuit while keeping its resistance constant the power.

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Remains unchanged

Halves

Doubles

quadruples

Force acting on a test charge between the plates of a parallel plate capacitor is F. If one of the plates is removed teh force on the same test charge will be.

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Zero

F/2

F

2 F

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