Question # 1

Resistance and resistivity of a substance

Choose an answer

Increase with rise in temperature

Decrease with rise in temperature

Remains same at every temperature

Increases at high voltage

If the current in a wire which is placed perpendicular to a magnetic fields increases the force on the wire.

Choose an answer

Increases

Decreases

Remain the same

Will be zero

The best instrument used for the measurement of emf of a cell a

Choose an answer

A voltimeter

An ammeter

A potentiometer

Wheatstone bridge

In order to measure the true emf of an electrolytic cell it is necessary that.

Choose an answer

The measurement be made while charging the cell

No current be drawn from the cell

The cell be connected into a type circuit

The cell be connected into a parallel type circuit

Inductance are measured in

Choose an answer

Coulombs

Volts

Henrys

Farads

At series resonance in L-C-R circuit the impedance is equal to.

Choose an answer

Ohmic resistance

Inductive reactance

Capacitive reactance

Inductive reactance minus capacitive reactance

In L - C parallel circuit the coil draws a.

Choose an answer

Lagging current

Leading current

Lagging voltage

Leading voltage

A plug connoted to a table lamp contains a 3 A fuse Why is the fuse needed.

Choose an answer

To increase the resistance of the circuit

To make it easier for the current to flow

To protect the wiring form overheating

To reduce the voltage across thelamp

On which of the following parameters capacitance does not depend upon.

Choose an answer

Area of the plates

Medium between the plates

Distance between the plates

Nature of material for plates

A capacitor of capacitance F micro is fully charged from a 20 V d.c supply what is the energy delivered by 20 V supply.

Choose an answer

2 mJ

10 m j

20 mJ

25 mj

A battery drives 50 C of charge round a circuit. The total work done is 750 J What is the electromotive force of the battery.

Choose an answer

0.07 V

15 V

700 V

1500 V

The eight most common element in the universe by mass is

Choose an answer

Ge

C

Si

As

If the number of coulombs per second through a wire of 10 Ohm resistance across a 120 V line is 12, the current is

Choose an answer

5 A

10 A

12 A

15 A

Which of the following is an example of induced magnetism.

Choose an answer

A compass needle pointing north

A north pole attracting iron filings

A northpole repelling a north pole

The coil of a motor turning in a magnetic field.

Susceptance of a circuit is the reciprocal of.

Choose an answer

Admittance

Resistance

Reactance

Impedance

To measure the accurate value of potential difference across two points, the voltmeter should have.

Choose an answer

Zero resistance

small resistance

Large resistance

Infinite resitance

Relative permeability is

Choose an answer

The ratio of flux density in a material to that for a vacuum

Very large for paramagnetic materials

small for paramagnetic materials

None of these

What is the direction of the magnetic field lines inside a bar magnet.

Choose an answer

From north pole to south pole

From south pole to north pole

From side to side

There are no magnetic field lines

If positive terminal of the battery is connected to n-type and negative terminal of the battery is connected to p-type then the diode is.

Choose an answer

Saturated

A gate

Forward biased

Revere biased

An uncharged di electric body experience a force when placed in an electric field if.

Choose an answer

A field in non zero at the body

The electric is a polar material

The dielectric is a non polar material

The field is non uniform over the body

A current carrying loop lying-in a magnetic field behaves lime a.

Choose an answer

Magnetics pole

Magnetic material

Magnetic dipole

Horse shoe magnet

More Classes

Other Links

PPSC Physics Chapter 6 Electricity and Magnetism MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer