Electric Circuits Objective Questions – Set 6

Which of the following is the heaviest?

Electric field intensity ( E ) at any point in an electric field is equal to

The ratio of electric flux density to electric field intensity is called ......... of medium

The fixed circular paths around the nucleus are called

Which of following is not a vector?

The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

A unit tube of flux is known as ____________________ tube.

Atoms with fewer than 4 valence electrons are

An electric field line and an equipotential surface are

In foster 1 form 1st element is

Electric displacement is a ____________________ quantity.

What is the mass number of an element that has 19 protons, 19 electrons, and 20 neutrons?

The unit of electric displacement vector is

Ampere second is the unit of

In 2 port network Z₁₂ = Z₂₁ indicates which property

A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V.

The voltage across R and L in a series RL circuit are found to be 200 V and 150 V respectively the rms value of the voltage across the series combination is ______ V.

The charge of an electron is

To prevent the generation of static charges on rubber or flat leather

A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

Atoms have no electric charge because they

The mass of a neutron of atom is

If two point charges are denoted by + Q and - Q and distance between this charges is d, then the dipole moment P equal to

The value of E within the field due to a point charge can be found with help of

The electron is lighter than a proton by a factor of about

A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

Constant K type HPF (high pass filter) having cut off frequency 12 KHz and nominal impedance R_o = 500 Ω Find shunt arm inductor L and series arm capacitance C for T and π section of HPF ?

The mass of a proton is

The instantaneous values of line current into a delta connected load in any two lines are + 2.5 amps and - 1.25 amps the current in the third line at the instant is ___________ A.