Class 10 Science Electricity? CBSE Questions & Answers

Class 10 · Science Electricity?

This is Science class 10 Science Electricity? CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Match the following with correct response. (1) Bulb filament (2) Heating element of an electric iron (3) Super conductors (4) EMF is a (A) Nichrome (B) Potential difference (C) Zero resistivity (D) Tungsten
  • A
    1-A, 2-C, 3-B, 4-D
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-D, 2-A, 3-C, 4-B
    Correct
  • D
    1-B, 2-D, 3-A, 4-C
2
Match the following with correct response. (1) Best conductor (2) Standard resistor (3) Semi- conductor (4) Insulator (A) Silicon (B) Silver (C) Ebonite (D) Constantan
  • A
    1-C, 2-B, 3-D, 4-A
  • B
    1-B, 2-D, 3-A, 4-C
    Correct
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-D, 2-A, 3-C, 4-B
3
Match the following with correct response. (1) I(2) P(3) F(4) R(A) \(P{\text{ }}8\frac{l}{A}\) (B) \(V \times I\) (C) \(\frac{Q}{t}\) (D) \(\frac{{K{q_1}{q_2}}}{{{r^2}}}\)
  • A
    1-C, 2-B, 3-D, 4-A
    Correct
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-A, 2-C, 3-B, 4-D
4
Match the following with correct response. (1) Electric current (2) Resistance (3) Potential difference (4) Resistivity (A) Ampere (B) Volt (C) Ohm (D) Ohm-m
  • A
    1-A, 2-C, 3-B, 4-D
    Correct
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-D, 2-A, 3-C, 4-B
5
Match the following with correct response. (1) Resistance in series (2) Resistance in Parallel (3) Power in parallel (4) Power in series (A) \(\frac{1}{{{R_1}}} + \frac{1}{{{R_2}}} + \frac{1}{{{R_3}}} + - - - - - \) (B) \(\frac{1}{{{P_1}}} + \frac{1}{{{P_2}}} + \frac{1}{{{P_3}}} + - - - - \) (C) \({P_1} + {P_2} + {P_3} - - - - \) (D) \({R_1} + {R_2} + {R_3} + - - - - \)
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-D, 2-A, 3-C, 4-B
    Correct
  • D
    1-C, 2-B, 3-D, 4-A
6
Match the following with correct response. (1) Electric current (2) Electric Potential (3) Resistance (4) Power (A) The current flowing through conductor is directly proportional to the potential difference applied across the ends of conductor (B) Amount of charge flowing through an area in unit second (C) Rate at which energy is consumed (D) Work done in moving a unit charge from infinity to that point
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-B, 2-D, 3-A, 4-C
    Correct
7
Match the following with correct response. (1) Current divides at a junction (2) Two or more cells connected together (3) Current is the same at all points (4) They protect electrical appliances from high voltage (A) Fuse (B) Battery (C) Parallel circuit (D) Series circuit
  • A
    1-C, 2-B, 3-D, 4-A
    Correct
  • B
    1-B, 2-D, 3-A, 4-C
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-D, 2-A, 3-C, 4-B
8
Match the following with correct response. (1) Electric current (2) Small deflection in the circuit (3) Maintains potential difference between two points (4) Variable Resistance (A) Ammeter (B) Battery (C) Galvanometer (D) Rheostat
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-A, 2-C, 3-B, 4-D
    Correct
9
Match the following with correct response. (1) Volt \( \times \) Columb (2) Volt \( \times \) Ampere (3) W \( \times \) S (4) Columb /Second (A) Joule/Sec (B) Q/t (C) V \( \times \) C (D) Joule
  • A
    1-C, 2-B, 3-D, 4-A
  • B
    1-D, 2-A, 3-C, 4-B
    Correct
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-A, 2-C, 3-B, 4-D
10
The rate of electric energy lost in a thermal device due to resistance R is given byA. \(P = {I^2}R\) B. \(P = \frac{{{V^2}}}{R}\) C. P = IVD. \(P = \frac{V}{I}\)
  • A
    B and C
  • B
    A and D
  • C
    A and C
  • D
    A and B
    Correct
11
Three bulbs of 100w, 200w and 60w are connected in series to the main supply of 220vm the current will be A. Equal in 100w and 200w B. Equal in 200w and 60w C. Different in allD. None of the above
  • A
    A and C
  • B
    A and B
    Correct
  • C
    A, B and C
  • D
    B and D
12
Maganin is an alloy of-A. Copper B. Manganese C. Nickel D. Platinum
  • A
    All of these
  • B
    A and C
  • C
    A and B
  • D
    A, B and C
    Correct
13
Which of the following statement are incorrect A. A neutron has positive charge of \( + 1.6 \times {10^{ - 19}}c\) B. An ammeter is a low resistance device C. Resistance of semiconductors decreases with temperature D. One ampere is equal to \({10^{ - 6}}\) uA
  • A
    A and C
  • B
    A and B
  • C
    A and D
    Correct
  • D
    A, B and C
14
Which of the following statements are correct about resistance A. Resistance of a conductor is directly proportional to the length B. Resistance of a conductor is directly proportional to area of cross sectionC. Resistance of a conductor depends the nature of the material D. Resistance of conductor is inversely proportional to the length
  • A
    A, B and D
  • B
    A and C
    Correct
  • C
    A and D
  • D
    A and B
15
Which of the following charges is possible?A. \(1.6 \times {10^{ - 19}}c\) B. \(3.2 \times {10^{ - 19}}c\) C. \(6.4 \times {10^{ - 19}}c\) D. \(0.8 \times {10^{ - 19}}c\)
  • A
    B and C
  • B
    A, B and C
    Correct
  • C
    A and C
  • D
    All of these