MCQ Class 10 Science Chapter 11 Electricity Advertisement MCQ’s For All Chapters – Science Class 10th 1. Resistance of a wire depends on –Length onlyArea onlyMaterial onlyLength, area, materialQuestion 1 of 152. The resistivity of silver is –1.60 × 10⁻⁸ Ω m2.63 × 10⁻⁸ Ω m5.20 × 10⁻⁸ Ω m94 × 10⁻⁸ Ω mQuestion 2 of 153. Nichrome is an alloy of –Cu and ZnNi, Cr, Mn, FeCu, Ni, MnFe, Al, ZnQuestion 3 of 154. Resistivity of nichrome is –1.84 × 10⁻⁶ Ω m44 × 10⁻⁶ Ω m49 × 10⁻⁶ Ω m100 × 10⁻⁶ Ω mQuestion 4 of 155. The resistance of a wire is given by –R = ρA/lR = ρl/AR = A/ρlR = V/IQuestion 5 of 156. The total resistance in series is –R₁ + R₂ + R₃(R₁R₂)/(R₁+R₂)1/R₁ + 1/R₂R₁R₂R₃Question 6 of 157. The current in series combination of resistors is –Different in eachSame in eachZeroInversely proportional to resistanceQuestion 7 of 158. The potential difference across a series combination is –Same across each resistorSum of voltages across each resistorProduct of resistancesZeroQuestion 8 of 159. In parallel combination of resistors, the reciprocal of equivalent resistance is –R₁+R₂+R₃1/R₁ + 1/R₂ + 1/R₃(R₁R₂)/(R₁+R₂)R₁R₂R₃Question 9 of 1510. The total current in a parallel combination is –Equal to one branch currentSum of currents in each branchZeroDivided equally irrespective of resistanceQuestion 10 of 1511. In parallel, the potential difference across each resistor is –DifferentSameProportional to resistanceZeroQuestion 11 of 1512. Advantage of parallel combination of appliances is –Same current flowsSame resistance valueEach appliance gets same potential differenceCurrent divides unequallyQuestion 12 of 1513. The heating effect of current is used in –Electric fanElectric ironGeneratorTransformerQuestion 13 of 1514. Heat produced in a resistor is given by –H = I²RtH = V²/RtH = V/IH = VI/tQuestion 14 of 1515. Heat produced is directly proportional to –Square of currentInverse of resistanceCube of voltageTime²Question 15 of 15 Loading...
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