# MP Board Solutions Class 10 Science Chapter 12 Electricity

MP Board Class 10th Science Solutions Chapter 12 Electricity Textbook or NCERT Questions and Answers.

## Additional Important Questions

MP Board Class 10th Science Chapter 12 Multiple Choice Questions

Question 1.
SI unit of an electric current is equal to
(a) 6 × 108 C (b) 9.8 × 1010 C (c) 1.6 × 10-19 C (d) None of these
Answer: (d) None of these

Question 2.
Which materials have changing resistivity?
(a) Conductors (b) Semiconductors (c) Non-metals (d) Super metals

Question 3.
If wire in a circuit is doubled its resistivity will be?
(a) Two times (b) Ten times (c) Zero (d) half

Question 4.
A wire used in circuit must be
(a) Highly resistant (b) Non resistance (c) Have high melting point (d) None of these
Answer: (b) Non resistance

Question 5.
A heating w ire must have
(a) High melting point (b) High conductivity to heat (c) Both (d) None
Answer: (b) High conductivity to heat

Question 6.
SI unit of resistance is:
(a) Coulomb (b) Ampere (c) Ohm (d) Ohm – meter

Question 9.
Relation of potential difference and current is represented by:
(a) Joule’s law (b) Ohm’s law (c) Dalton’s law (d) None
Answer: (b) Ohm’s law

Question 10.
Formula which represents the relation among potential difference and current following in a circuit is:
(a) V = IR (b) V = I/R (c) l = Q/t (d) R = p lA
Answer: (a) V = IR

Question 11.
Kilo watt is a unit for:
(a) Power (b) Electrical energy commercial (c) Resistance (d) Current flow in circuit

Question 12.
Which one has less resistance?
(a) 10 watt bulb (b) 15 watt LED (c) 60 watt bulb (d) 60 watt LED.
Answer: (a) 10 watt bulb

Question 13.
In which type of combinations resistance is more?
(a) Series Combination (b) Parallel combination (c) both (d) Single resistance unit.
Answer: (a) Series Combination

Question 14.
Joule’s law formulation is
(a) H = IRT (b) H = I2RT (c) P = VI (d) RT = PV
Answer: (d) RT = PV

Question 15.
Hardest metal which can resist maximum heat is:
(a) Lead (b) Tungsten (c) Silver (d) Carbon

Question 16.
If current passing a circuit is 10 A and wire is connected to 100 volt line resistant in the wire will be:
(a) 10 A (b) 10 Ω (c) 100 Ω (d) O Ω
Answer: (b) 10 Ω

Question 17.
An insulator has a resistivity equals to:
(a) 10-8 Ω m (b) 10 Ω m (c) 5 Ω m (d) 10-18 Ω
Answer: (a) 10-8 Ω m

Question 19.
If resistors are arranged in parallel with value 1 Ω, 2 Ω and 3 Ω Total resistant will be:
(a) more than 3 Ω (b) less than 3 Ω (c) less than 1 Ω (d) equal to 1 Ω
Answer: (b) less than 3 Ω

Question 20.
The changing 1 kWh to joule will be equal to
(a) 3.6 × 106 J (b) 3.6 × 10-6 J (c) 1.6 × 106 J (d) 1 × 106 J
Answer: (a) 3.6 × 106 J

## 10th Science Chapter 12 Long Answer type Questions

MP Board Class 10th Science Solutions

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