Question # 1

What is the power factor of LR circuit.

Choose an answer

Unity

Zero

infinity

Between 0 and 1

In L-C parallel circuit the capacitor draws a

Choose an answer

Lagging current

Leading current

Lagging voltage

Leading voltage

In alternating current circuits the quantity which plays the same role as resistance in direct current circuits is called.

Choose an answer

Reactance

Admittance

Conductance

Impedance

_{When a charged particle moves through a magnetic field it suffers a change in its}

Choose an answer

Charge

Mass

Energy

Direction of motion

The cause of production of eddy current is the

Choose an answer

Current flowing in a conductor

Current flowing in a insulator

Motion of a conductor in a varying magnetic field

Motion of an insulator in a varying magnetic field

Work can be stored in an inductor as.

Choose an answer

Elastic P.E.

Electrical P;E.

Gravitational energy

K.E.

In a simple D.C. motor the direction of current in the motor is reversed every half revolution to keep the motor turning in the same direction which part of the motor does this.

Choose an answer

Brushes

Coil

Commutator

Poles

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

Choose an answer

Thermistor

Thermocouple

Strain gauge

Potentiometer

Eddy current can be minimized by

Choose an answer

Moving the conductor rapidly

Moving the conductor slowly

Using a metallic core

Using a laminated core

Iron loss in a dynamo arises because of.

Choose an answer

The resistance of armature coil

The production of eddy current

The presence of mechanical friction

The leakage of flux

A heart coil is out into two equal parts and only one part is now used in the heater The heat generated will be.

Choose an answer

Halved

One fourth

Doubled

4 times

The minimum value of charge on any object is.

Choose an answer

1.6 x 10^-29 C

1.6 x 10^-19 C

1.6 x 10^-9 C

1 C

One volt is equal to.

Choose an answer

One joule per coulomb

One dyne per coulomb

One newton per coulomb

One watt second

Which given material is the best for making connecting wires

Choose an answer

Nichrome

Iron

Gold

Copper

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

Choose an answer

Different

Same

Zero

Negative

The main causes of power losses in a generator are.

Choose an answer

Pulsatng current

Eddy current

Magnetic current

Both B and C

The gravitational potential inside a hollow spherical shell

Choose an answer

Increases from zero at the centre to the maximum value at the surface

Is zero throughout the inteior

Decreases from the centre

Is uniform throughout the interior

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

Choose an answer

Electric potential

Electric fierce

Electric charge

Magnetic force

An alternating current can be produced by

Choose an answer

Turbine

Electric motor

Generator

Trnasormer

What is the smalless total resistance using only a 6 ohm and 12 ohm resistors.

Choose an answer

2 Ohm

3 Ohm

4 Ohm

6 Ohm

The amount of charge which can be placed on a conductor does not depend on.

Choose an answer

The dielectric strength of the surrounding medium.

Its capacitance

Its potential

Its size or shape

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