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Class 10 Science Chapter Electricity - Part 6

NCERT & CBSE Based Class 10 Science Chapter Electricity.

Class 10th
50 Questions
0.00 Marks
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Q1 • MCQ • 1 marks
Which quantity remains the same across parallel branches?
Q3 • MCQ • 1 marks
Overloading occurs due to:
Q4 • MCQ • 1 marks
Short circuit mainly occurs because:
Q5 • MCQ • 1 marks
Which safety device automatically breaks the circuit during excessive current?
Q6 • MCQ • 1 marks
The SI unit of electric power is:
Q7 • MCQ • 1 marks
Which quantity is measured in kilowatt-hour (kWh)?
Q8 • MCQ • 1 marks
One kilowatt is equal to:
Q9 • MCQ • 1 marks
The SI unit of current is named after:
Q10 • MCQ • 1 marks
The SI unit of resistance is named after:
Q11 • MCQ • 1 marks
The SI unit of potential difference is named after:
Q12 • MCQ • 1 marks
Which device measures current in a circuit?
Q13 • MCQ • 1 marks
Which device measures potential difference?
Q14 • MCQ • 1 marks
A rheostat is used to:
Q15 • MCQ • 1 marks
The reciprocal of resistivity is called:
Q16 • MCQ • 1 marks
Which material has the highest resistivity among the following?
Q17 • MCQ • 1 marks
Copper is commonly used for electrical wiring because it has:
Q18 • MCQ • 1 marks
Which appliance converts electrical energy into mechanical energy?
Q19 • MCQ • 1 marks
Which appliance converts electrical energy mainly into heat energy?
Q20 • MCQ • 1 marks
The heating element in an electric iron is usually made of:
Q21 • MCQ • 1 marks
Which property of nichrome makes it suitable for heating elements?
Q22 • MCQ • 1 marks
If voltage is doubled and resistance remains constant, current becomes:
Q23 • MCQ • 1 marks
If current is doubled, electrical power (P = I²R) becomes:
Q24 • MCQ • 1 marks
Which law is represented by the equation H = I²Rt?
Q25 • MCQ • 1 marks
The heat produced in a resistor increases with:
Q26 • MCQ • 1 marks
Which type of circuit is used in household wiring?
Q27 • MCQ • 1 marks
The main advantage of parallel connection is:
Q28 • MCQ • 1 marks
Which of the following causes overloading?
Q29 • MCQ • 1 marks
Short-circuiting occurs when:
Q30 • MCQ • 1 marks
Which safety device melts when excessive current flows?
Q31 • MCQ • 1 marks
The earth wire is connected to the:
Q32 • MCQ • 1 marks
Earthing prevents:
Q33 • MCQ • 1 marks
The filament of a bulb emits light because it becomes:
Q34 • MCQ • 1 marks
Which quantity is measured by an energy meter?
Q35 • MCQ • 1 marks
The bill for electricity is based on:
Q36 • MCQ • 1 marks
Which graph is obtained for an ohmic conductor?
Q37 • MCQ • 1 marks
The resistance of a wire decreases when its:
Q38 • MCQ • 1 marks
Which of the following has the lowest resistivity?
Q39 • MCQ • 1 marks
Which of the following is the poorest conductor?
Q40 • MCQ • 1 marks
A conductor offers opposition to the flow of current due to its:
Q41 • MCQ • 1 marks
Which wire usually carries current back from the appliance?
Q42 • MCQ • 1 marks
The colour of the earth wire is generally:
Q43 • MCQ • 1 marks
The colour of the live wire is generally:
Q44 • MCQ • 1 marks
The colour of the neutral wire is generally:
Q45 • MCQ • 1 marks
Which device is used to switch off the supply automatically in case of excessive current?
Q46 • MCQ • 1 marks
The resistance of an ideal insulator is:
Q47 • MCQ • 1 marks
Which quantity is directly proportional to current according to Ohm's law?
Q48 • MCQ • 1 marks
Which formula correctly represents electrical energy?
Q49 • MCQ • 1 marks
If the resistance is constant, doubling the voltage will:
Q50 • MCQ • 1 marks
Which device is commonly used to measure electricity consumption in homes?
Q51 • MCQ • 1 marks
One electrical unit is equal to:

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