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Current Electricity — 5 MCQ Tests
50 Theory-Based Questions • 5 Tests • 10 Questions Each
Instructions: Select one answer for each question and click
Submit Test. Correct answers will be displayed after submission.
Only theory/concept-oriented MCQs from the uploaded Current Electricity notes have been selected;
calculation-heavy questions have been excluded.
Current Electricity — Test 1
10 Theory-Based MCQs
Not Submitted
1
A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance of ______.
Source: Q4 from uploaded Current Electricity notes
2
Which of the following has negative temperature coefficient of resistance?
Source: Q9 from uploaded Current Electricity notes
3
The temperature coefficient of resistance for alloys is:
Source: Q10 from uploaded Current Electricity notes
4
Which of the following material has the highest specific resistance?
Source: Q11 from uploaded Current Electricity notes
5
Temperature coefficient of resistance for metals is:
Source: Q12 from uploaded Current Electricity notes
6
A metallic block has no potential difference applied across it. The mean velocity of free electrons is:
Source: Q15 from uploaded Current Electricity notes
7
In an experiment with a potentiometer, when the galvanometer deflection is zero, then no current flows in:
Source: Q24 from uploaded Current Electricity notes
8
Kirchhoff's I law, ΣI = 0 at a junction, deals with the conservation of:
Source: Q25 from uploaded Current Electricity notes
9
The potential gradient of the potentiometer wire depends on:
Source: Q26 from uploaded Current Electricity notes
10
Resistance increases with increase in temperature for:
Source: Q30 from uploaded Current Electricity notes
Current Electricity — Test 2
10 Theory-Based MCQs
Not Submitted
1
A bird sitting on an insulated wire carrying a current feels quite safe because:
Source: Q32 from uploaded Current Electricity notes
2
Conductors which obey Ohm's law are called:
Source: Q33 from uploaded Current Electricity notes
3
Conductivity is the reciprocal of:
Source: Q34 from uploaded Current Electricity notes
4
Peltier effect is the converse of:
Source: Q36 from uploaded Current Electricity notes
5
The heating element that does not oxidize readily is an alloy of metals made of:
Source: Q41 from uploaded Current Electricity notes
6
Fuse wire is an alloy of:
Source: Q43 from uploaded Current Electricity notes
7
In an electric circuit fuse wire is connected in:
Source: Q44 from uploaded Current Electricity notes
8
Joule's heating effect is desirable in:
Source: Q45 from uploaded Current Electricity notes
9
The sensitivity of a potentiometer can be increased by:
Source: Q46 from uploaded Current Electricity notes
10
The resistance of a wire varies inversely as:
Source: Q48 from uploaded Current Electricity notes
Current Electricity — Test 3
10 Theory-Based MCQs
Not Submitted
1
The curve representing Ohm's law is a:
Source: Q50 from uploaded Current Electricity notes
2
By increasing the temperature, the specific resistance of a conductor and a semiconductor:
Source: Q51 from uploaded Current Electricity notes
3
Thermistors are usually made of:
Source: Q52 from uploaded Current Electricity notes
4
The resistivity of a wire depends on:
Source: Q53 from uploaded Current Electricity notes
5
For which of the following substances does resistance decrease with temperature?
Source: Q54 from uploaded Current Electricity notes
6
Which material has a small value of temperature coefficient of resistance?
Source: Q55 from uploaded Current Electricity notes
7
The unit of electromotive force is:
Source: Q59 from uploaded Current Electricity notes
8
The direction of conventional current is taken as the direction of flow of:
Source: Q61 from uploaded Current Electricity notes
9
Current is a quantity:
Source: Q62 from uploaded Current Electricity notes
10
When three resistors are connected in series, the value of the effective resistance is:
Source: Q67 from uploaded Current Electricity notes
Current Electricity — Test 4
10 Theory-Based MCQs
Not Submitted
1
The resistance of mercury is zero when its temperature is reduced to:
Source: Q66 from uploaded Current Electricity notes
2
Thermoelectric generators are used in power plants to convert ______ into electricity.
Source: Q72 from uploaded Current Electricity notes
3
The potentiometer wire is made of:
Source: Q78 from uploaded Current Electricity notes
4
Kirchhoff's II law is a consequence of conservation of:
Source: Q79 from uploaded Current Electricity notes
5
The tolerance of a silver ring in resistors is:
Source: Q80 from uploaded Current Electricity notes
6
The unit of current density is:
Source: Q88 from uploaded Current Electricity notes
7
The reciprocal of resistance is:
Source: Q90 from uploaded Current Electricity notes
8
A semiconductor with a negative coefficient of resistance is called:
Source: Q138 from uploaded Current Electricity notes
9
Which one of the following does not possess a negative temperature coefficient of resistance?
Source: Q142 from uploaded Current Electricity notes
10
The Wheatstone bridge is more accurate than other instruments since it:
Source: Q144 from uploaded Current Electricity notes
Current Electricity — Test 5
10 Theory-Based MCQs
Not Submitted
1
Conductors that do not follow Ohm's law are called:
Source: Q145 from uploaded Current Electricity notes
2
When n resistors of equal resistance R are connected in series, the effective resistance is:
Source: Q149 from uploaded Current Electricity notes
3
The unit of mobility of a free electron is:
Source: Q150 from uploaded Current Electricity notes
4
If the temperature of a wire increases, its resistance will be:
Source: Q151 from uploaded Current Electricity notes
5
Which colour of the ring indicates 10% tolerance of a resistor?
Source: Q154 from uploaded Current Electricity notes
6
In superconductors:
Source: Q156 from uploaded Current Electricity notes
7
The temperature about which the resistance of mercury becomes zero is:
Source: Q159 from uploaded Current Electricity notes
8
The charging current for a capacitor is 0.2 A. The displacement current is:
Source: Q160 from uploaded Current Electricity notes
9
An electric source will supply a constant current into the load resistor if its internal resistance is:
Source: Q167 from uploaded Current Electricity notes
10
According to Joule's law of heating, heat is given by:
Source: Q170 from uploaded Current Electricity notes
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