Teachoo MCQ Test

10 Question MCQ (including Assertion)

Preparing for CBSE

Chapter 11 Class 10 - Electricity | 10 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
Time remaining 720
Question 1 of 10
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Question 1 of 10
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A cylindrical conductor of length 'I' and uniform area of cross section ' \(A\) ' has resistance ' \(R\) '. The area of cross section of another conductor of same material and same resistance but of length ' 21 ' is
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Question 2 of 10
Assertion (A): Alloys are commonly used in electrical heating devices like electric iron and heater.
Reason (R): Resistivity of an alloy is generally higher than that of its constituent metals but the alloys have low melting points then their constituent metals.
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Question 3 of 10
Assertion (A): Bending a wire does not affect electrical resistance.
Reason (R): Resistance of wire is proportional to resistivity of material.
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Question 4 of 10
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Which of the following represents voltage?
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Question 5 of 10
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What is the maximum resistance which can be made using five resistors each of \(15 \Omega\) ?
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Question 6 of 10
Assertion (A): Two resistance having value \(R\) each. Their equivalent resistance is R 2.
Reason (R): Given Resistances are connected in parallel.
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Question 7 of 10
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical resistance.
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Question 8 of 10
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At the time of short circuit, the electric current in the circuit:
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Question 9 of 10
Assertion (A): In a simple battery circuit the point of lowest potential is positive terminal of the battery.
Reason (R): The current flows towards the point of the lower potential as it flows in such a circuit from the positive to the negative terminal.
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Question 10 of 10
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An electric kettle consumes 1 kW of electric power when operated at 220 V . A fuse wire of what rating must be used for it?
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