Electricity Class 10 Physics Assignment Pdf
Class 10 Physics students should refer to the following printable assignment in Pdf for Electricity in standard 10. This test paper with questions and answers for Grade 10 Physics will be very useful for exams and help you to score good marks
Class 10 Physics Assignment for Electricity
Another conductor of length 2l and resistance R of the same material has area of cross-section
(a) A/2
(b) 3A/2
(c) 2A
(d) 3A
Answer : C
Question. Specific resistance is numerically equal to the resistance offered by
(a) 1 cm length of a conductor
(b) a conductor of unit cross-section
(c) 1 cm length of conductor of 1 cm2 of crosssection
(d) 1 cm3 of a conductor
Answer : C
Question. 1 volt = ..............
(a) 1 joule / coulomb
(b) 1 coulomb/joule
(c) 1 joule/coulomb2
(d) 1 joule coulomb
Answer : A
Question. In the given circuit voltmeter shows a reading of 4 V, then the power developed across R resistance will be
(a) 15 mW
(b) 14 mW
(c) 12 mW
(d) 10 mW
Answer : A
Question. If current through a resistance is increased by 100%, simultaneously reducing resistance value to 25%, the new power dissipated will be
(a) same
(b) increased by 100%
(c) decreased by 400%
(d) increased by 400%.
Answer : C
Question. The amount of heat produced in a conductor is
(a) directly proportional to the current flowing through it
(b) inversely proportional to the current flowing through it
(c) directly proportional to the square of the current flowing through it
(d) inversely proportional to the square of current flowing through it.
Answer : C
Question. A multimeter is used to measure
(a) current only
(b) resistance only
(c) voltage only
(d) current, resistance and voltage.
Answer : D
Question. The proper representation of series combination of cells obtaining maximum potential is
Answer : A
Question. The V-I graph of resistor is shown in figure. If the resistance is determined at points A, B and C, then it is found that
(a) resistances at A, B and C a are equal
(b) resistance at C is more than that at B
(c) resistance at B is lower than that at A.
(d) resistance at C is lower than that at A.
Answer : B
Question. Suppose five resistances, each of 10 ohm, are provided to you. You are free to get the desired value by combining them. The desired value will lie in between
(a) 2 ohm to 50 ohm
(b) 20 ohm to 40 ohm
(c) 12 ohm to 50 ohm
(d) 10 ohm to 60 ohm
Answer : A
Question. In the following circuits, heat produced in the resistor or combination of resistors connected to a 12 V battery will be
(a) same in all the cases
(b) minimum in case (i)
(c) maximum in case (ii)
(d) maximum in case (iii)
Answer : D
Question. Masses of three wires of copper are in the ratio 1 : 3 : 5 and their lengths are in the ratio of 5 : 3 : 1. The ratio of their electrical resistances are
(a) 1 : 3 : 5
(b) 5 : 3 : 1
(c) 1 : 15 : 125
(d) 125 : 15 : 1
Answer : D
Question. If a wire of resistance R is melted and recast to half its length, the new resistance of the wire will be
(a) R/4
(b) R/2
(c) R
(d) 2R
Answer : A
Question. The given figure shows the I-V curve (i) for a nichrome wire of given length and cross-section. Which of the following will yield the curve (ii)?
(a) Increase the length of nichrome wire.
(b) Decrease the thickness of nichrome wire.
(c) Replace the nichrome wire with a similar copper wire.
(d) Replace the nichrome wire with a similar silicon wire.
Answer : C
Question. In a metallic conductor, electric current thought to be due to the movement of
(a) ions
(b) amperes
(c) electrons
(d) protons
Answer : C
Question. In order to distribute a high potential, we connect a number of resistors
(a) in series
(b) in parallel
(c) some in series and some in parallel
(d) It is not possible to distribute potential.
Answer : A
Very Short Answers
Short Answers
Long Answers
Question : How do we express electric current?
Question : What is an electric circuit?
Question : What does a switch do?
Question : Conventionally, in an electric circuit the direction of electric current is taken as opposite to the direction of the flow of electrons, which are negative charges. Why?
Question : What is the SI unit of electric charge? How many electrons make one coulomb of charge?
Question : Define the SI unit of current.
Question : Which instrument is used to measure the current flowing in a circuit?How is it connected in the circuit and why?
Question : In which smaller units can we measure the small amount of current flowing in the circuit?
Question : How are the related to the SI unit of current?
Question : What makes the electric charge to flow?
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