MCQ Chapter 4 General Science Class 8 Maharashtra Board MCQ For All Chapters – General Science Class 8Current Electricity and Magnetism 1. What constituents are present in an atom?Only protonsProtons and electronsOnly electronsNeutrons and protonsQuestion 1 of 202. Why doesn’t an object show any charge despite containing charged particles?Protons cancel electronsElectrons are stationaryCharges are too smallAtoms are neutralQuestion 2 of 203. What happens when a glass rod is rubbed on a silk cloth?It becomes magneticIt gains a chargeIt loses electrons onlyIt remains neutralQuestion 3 of 204. What are moving charges in the context of the document?ProtonsElectronsPositive ionsNeutronsQuestion 4 of 205. What is required to make electrons flow in a conductor?HeatForceMagnetismLightQuestion 5 of 206. What is current electricity?Flow of protonsFlow of electrons in a conductorStatic charge buildupMagnetic field generationQuestion 6 of 207. What flows from a cloud to the ground during lightning?Small currentHeatLarge currentPotentialQuestion 7 of 208. In an electric cell, what produces the current?Only negative chargesOnly positive chargesBoth negative and positive chargesNeutral particlesQuestion 8 of 209. What determines the direction of positive charge flow?TemperatureElectrostatic potentialMagnetic fieldGravityQuestion 9 of 2010. What is potential difference similar to in the document?Speed of waterHeight of a waterfallWeight of an objectSize of a cellQuestion 10 of 2011. In the Try this 4.1 experiment, why does the bulb glow in fig 4.1(b)?No potential differencePresence of a dry cellAbsence of wiresMagnetic forceQuestion 11 of 2012. In which direction do electrons flow in a circuit with a dry cell?Positive to negativeNegative to positiveRandomlyUpwardQuestion 12 of 2013. What is the SI unit of potential difference?AmpereCoulombVoltOhmQuestion 13 of 2014. How is electric current measured?Liters per secondCharge flowing per secondTemperature differenceVoltage increaseQuestion 14 of 2015. What is the SI unit of electric current?VoltAmpereCoulombWattQuestion 15 of 2016. What is the main function of an electric cell?To store magnetismTo maintain constant potential differenceTo increase current flowTo reduce resistanceQuestion 16 of 2017. What is the negative terminal of a dry cell made of?GraphiteManganese dioxideZincCarbonQuestion 17 of 2018. What acts as the positive terminal in a dry cell?Zinc coverGraphite rodManganese dioxideElectrolyteQuestion 18 of 2019. Why can’t a dry cell produce a large electric current?It has no electrolyteChemical reaction is slowIt lacks a positive terminalIt is too smallQuestion 19 of 2020. What is an advantage of dry cells over liquid cells?Higher currentLonger shelf lifeSmaller sizeStronger magnetismQuestion 20 of 20 Loading...
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