10TH CBSE SCIENCE ELECTRICITY MCQS QUIZ

Electricity - 20 MCQ Test

Q1. In domestic electric circuits, 15 A wiring is used for devices with:
Low power
High power
Metal body
Plastic body

Q2. In Ohm's law verification, the ammeter is connected:
Parallel
Series
Across battery
Not used

Q3. Minimum fuse rating for a 1 kW, 220 V electric kettle is:
1 A
2 A
4 A
5 A

Q4. The relation between charge, current and time is:
Q=I/t
Q=It
I=Qt
V=IR

Q5. Four 8 Ω resistors in series and then parallel give Rs/Rp =
2
8
16
32

Q6. Reducing resistance to half doubles heat produced by:
Half
Twice
Four times
One-fourth

Q7. Bauxite is the chief ore of:
Iron
Copper
Aluminium
Zinc

Q8. Current through bulbs in series is:
Different
Same
Zero
Random

Q9. Coulomb is the SI unit of:
Current
Charge
Voltage
Resistance

Q10. Wood is:
Good conductor
Semiconductor
Insulator
Alloy

Q11. Current is the rate of flow of:
Voltage
Resistance
Charge
Power

Q12. Voltage remains same in:
Series
Parallel
Mixed
None

Q13. Commercial unit of electrical energy is:
Joule
Watt
kWh
Ampere

Q14. Copper is used for wiring because it:
Is cheap
Conducts electricity well
Is magnetic
Is light

Q15. Fuse works on the ____ effect of current.
Magnetic
Chemical
Heating
Cooling

Q16. Current flows from:
Low to high potential
High to low potential
Both
Neither

Q17. Electric bulb works on:
Magnetic effect
Heating effect
Chemical effect
Electrolysis

Q18. Rubber gloves protect electricians because rubber is:
Conductor
Insulator
Semiconductor
Metal

Q19. Resistance of a conductor depends on:
Material
Length
Area
All of these

Q20. The graph between current and voltage for an ohmic conductor is:
Circle
Straight line
Parabola
Hyperbola