Class 10 Science Electricity Objective Questions with Answers

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1. Q1. The SI unit of electric current is

   (A)Volt(B)Ohm(C)Ampere(D)Coulomb

2. Q2. Ohm's law gives the relation between

   (A)Current and resistance(B)Voltage and current(C)Power and energy(D)Charge and time

3. Q3. Three resistors of 2 Ω each are connected in series. The total resistance is

   (A)2 Ω(B)6 Ω(C)0.67 Ω(D)3 Ω

4. Q4. 1 kilowatt-hour is equal to

   (A)3.6 × 10⁶ J(B)3.6 × 10³ J(C)1000 J(D)3600 J

5. Q5. Resistivity of a wire depends on

   (A)Its length(B)Its area of cross-section(C)Its material(D)The current through it

6. Q6. The device used to measure potential difference is

   (A)Ammeter(B)Voltmeter(C)Galvanometer(D)Rheostat