Current Electricity — Part 2 MCQs with Explanations

Carbon is the correct answer to “Which of the following materials has a negative temperature coefficient of resistance”. This question is standard in competitive examination syllabi for Current Electricity.

Manganin is the correct answer to “Which of the following material has nearly zero temperature coefficient of resistance”. This question is standard in competitive examination syllabi for Current Electricity.

Resistance : ohm is the correct answer to “Conductance: mho ::”. This question is standard in competitive examination syllabi for Current Electricity.

The magnitude of voltage on the conductor is the correct answer to “The thickness of insulation provided on the conductor depends on”. This question is standard in competitive examination syllabi for Current Electricity.

Conductance is the correct answer to “All good conductors have high”. This question is standard in competitive examination syllabi for Current Electricity.

Silver is the correct answer to “Which is the best conductor of electricity”. This question is standard in competitive examination syllabi for Current Electricity.

resistance is the correct answer to “Heat in a conductor is produced on the passage of electric current due to”. This question is standard in competitive examination syllabi for Current Electricity.

Decreases is the correct answer to “Resistance of carbon filament lamp as the applied voltage increases.”. This question is standard in competitive examination syllabi for Current Electricity.

4 Ω is the correct answer to “Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 0.25 Ω. If the same four wires are connected is series the effective resistance will be”. This question is standard in competitive examination syllabi for Current Electricity.

Decrease is the correct answer to “When one leg of parallel circuit is opened out the total current will”. This question is standard in competitive examination syllabi for Current Electricity.

Same current passes in turn through both is the correct answer to “Two resistors are said to be connected in series when”. This question is standard in competitive examination syllabi for Current Electricity.

Increases is the correct answer to “Resistance of a tungsten lamp as applied voltage increases”. This question is standard in competitive examination syllabi for Current Electricity.

4 $$\Omega $$ is the correct answer to “Three 6 ohm resistors are connected to form a triangle. What is the resistance between any two corners”. This question is standard in competitive examination syllabi for Current Electricity.

10 ohms is the correct answer to “Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other. If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be”. This question is standard in competitive examination syllabi for Current Electricity.

resistance must be uniform is the correct answer to “The condition for the validity under Ohm’s law is that”. This question is standard in competitive examination syllabi for Current Electricity.

Electrolytes is the correct answer to “Which of the following can have negative temperature coefficient”. This question is standard in competitive examination syllabi for Current Electricity.

Aluminium is the correct answer to “Which one of the following does not have negative temperature coefficient”. This question is standard in competitive examination syllabi for Current Electricity.

Conductance is the correct answer to “The property of a conductor due to which it passes current is called”. This question is standard in competitive examination syllabi for Current Electricity.

Conductors is the correct answer to “The substances which have a large number of free electrons and offer a low resistance are called”. This question is standard in competitive examination syllabi for Current Electricity.

1840 is the correct answer to “The ratio of mass of proton to that of electron is nearly”. This question is standard in competitive examination syllabi for Current Electricity.

5 ohms is the correct answer to “Three resistances of 10 ohms, 15 ohms and 30 ohms are connected in parallel. The total resistance of the combination is”. This question is standard in competitive examination syllabi for Current Electricity.

Arcs across separating contacts is the correct answer to “Switching of a lamp in house produces noise in the radio. This is because switching operation produces”. This question is standard in competitive examination syllabi for Current Electricity.

The current through each bulb in same is the correct answer to “The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true”. This question is standard in competitive examination syllabi for Current Electricity.

It gives away electrons is the correct answer to “A glass rod when rubbed with silk cloth is charged because”. This question is standard in competitive examination syllabi for Current Electricity.

D.C. is the correct answer to “When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is”. This question is standard in competitive examination syllabi for Current Electricity.

Compound is the correct answer to “A substance whose molecules consist of dissimilar atoms is called”. This question is standard in competitive examination syllabi for Current Electricity.

Is zero in all branches is the correct answer to “If a parallel circuit is opened in the main line, the current”. This question is standard in competitive examination syllabi for Current Electricity.

Paper is the correct answer to “Out of the following which is an insulating material”. This question is standard in competitive examination syllabi for Current Electricity.

Semiconductors is the correct answer to “Ohm's law is not applicable to”. This question is standard in competitive examination syllabi for Current Electricity.

Collisions between conduction electrons and atoms is the correct answer to “When electric current passes through a metallic conductor, its temperature rises. This is due to”. This question is standard in competitive examination syllabi for Current Electricity.

4 is the correct answer to “The number of electrons in the outer most orbit of carbon atom is”. This question is standard in competitive examination syllabi for Current Electricity.

I2Rt is the correct answer to “If I, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to”. This question is standard in competitive examination syllabi for Current Electricity.

Practically zero is the correct answer to “What is the answer to this question? The resistance of a few meters of wire conductor in closed electrical circuit is”. This question is standard in competitive examination syllabi for Current Electricity.

Two ions is the correct answer to “A field of force can exist only between”. This question is standard in competitive examination syllabi for Current Electricity.

Resistance is the correct answer to “Conductance is reciprocal of”. This question is standard in competitive examination syllabi for Current Electricity.

6.4 A, 9.6 A is the correct answer to “A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is”. This question is standard in competitive examination syllabi for Current Electricity.

$$\frac{1}{9}$$ times is the correct answer to “Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be”. This question is standard in competitive examination syllabi for Current Electricity.

Resistance of heater coil is more than the supply wires is the correct answer to “When current flows through heater coil it glows but supply wiring does not glow because”. This question is standard in competitive examination syllabi for Current Electricity.

Current is the correct answer to “Which of the following quantities remain the same in all parts of a series circuit”. This question is standard in competitive examination syllabi for Current Electricity.

800 Ohms is the correct answer to “A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is”. This question is standard in competitive examination syllabi for Current Electricity.