Electric Circuits Objective Questions – Set 10

A 3 Ω resistor having 2 A current will dissipate the power of

Internal heating of a capacitor is usually attributed to

When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will

In a capacitor, the electrcal energy is stored in

Which of following materials has the least resistivity ?

Which quantity consists of a unit 1KWh ?

In RLC parallel circuit circuit current through inductor is more than current through capacitor. Then what is the power factor of the circuit?

If C be the capacitance, V be the potential difference and I be the current, then I / CV will have the unit of

The filament of an electric bulb is made of

A capacitor

Which of the following are typical resistance and power-dissipation values for a carbon- composition resistor ?

Two resistances R₁ and R₂ are connected in series across the voltage source where R₁ > R₂. The largest drop will be across

Internal resistance of ideal voltage source is

A current of 1 mA flows through a 1 Mohm, 2 W carbon resistor. The power dissipated as heat in the resistor will be

The power dissipated in a pure capacitor is

Which of the following quantities remain the same in all parts of a parallel circuit

When current flows through heater coil it glows but supply wiring does not glow because

Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open

A variable capacitance is one whose capacitance

A resistance having rating 10 ohms, 10 W is likely to be a

The energy stored by a capacitor is given by

Two resistor are said to be connected in parallel when

If the dielectric of a capacitor is replaced by conducting material

Which resistor will be physically larger in size ?

For making a capacitor, it is better to select a dielectric having

The electrical resistance of human body is around

The maximum current rating for a 10 k Ω, 0.5 W resistor is

Which of the following carbon coded resistor has value of 10 kohm with 20% tolerance ?

Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be

The capacitance of a parallel plate capacitor can be varied by