Magnetic Effects of Electric Current

Class 10 · Science

147 questions47 easy50 medium50 hard

Sample Questions

Q1.What component does an AC generator have instead of a split ring?

ASlip rings
BCommutator
CFuse
DTransformer

Q2.An AC generator and a DC generator differ mainly in:

AThe principle of working
BThe type of coil used
CThe type of rings used (slip rings vs split rings)
DThe type of magnet used

Q3.What is Fleming's right-hand rule used for?

AFinding the direction of induced current in a generator
BFinding the force on a motor
CFinding resistance
DFinding capacitance

Q4.A current flows through a straight wire pointing north. Using the right-hand thumb rule, what is the direction of the magnetic field to the east of the wire?

AUpward (out of the ground)
BDownward (into the ground)
CTowards the north
DTowards the south

Q5.What is the magnetic field at the centre of a circular current loop?

AIt is perpendicular to the plane of the loop and its strength depends on current and radius
BIt is zero
CIt is parallel to the loop
DIt is random

Q6.This is a sample question to preview what you'll get in the full practice test...

A. Option one
B. Option two
C. Option three
D. Option four

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Concepts Covered

ACAC AdvantagesAC FrequencyAC GeneratorAC OnlyAC generatorAC voltageAC vs DC GeneratorAngle DependenceApplicationArmatureBrushesChanging FluxCircular CoilCircular LoopCommutatorConservation of EnergyDCDC MotorDC generatorDC motorDirectionDistanceDomestic SupplyDomestic WiringEMFEarth WireEarth's Magnetic FieldElectric GeneratorElectric MotorElectric ShockElectromagnetElectromagnetic InductionElectromagnetism DiscoveryEnergy ConversionExperimental DesignF = BILFaradayFaraday's lawFleming's Left-hand RuleFleming's Right-hand RuleFleming's left-hand ruleFleming's right-hand ruleForceForce Between WiresForce DirectionForce on ConductorFrequency CalculationFuseFuse PlacementGalvanometerGeneratorHeat LossHeat Loss CalculationHeating EffectIndiaInduced CurrentIron CoreI²R lossLenz's LawLorentz forceMCBMCB vs FuseMagnetic FieldMagnetic Field FormulaMagnetic Field LinesMagnetic Field PatternMagnetic Field StrengthMotor ComponentsMotor EfficiencyMotor PrincipleMotor vs GeneratorMutual InductionNumber of TurnsOerstedOverloadingParallel CircuitParallel CurrentsPolarityPower TransmissionPrinciplePropertiesProportionalityRMS valueRate of ChangeRelative MotionRight-hand Thumb RuleSafetySafety DeviceShort CircuitSinusoidal OutputSlip RingsSoft Iron vs SteelSolenoidSpeed and OutputSplit RingStraight ConductorThree WiresTorqueTransformerTransient CurrentTransmissionUniform FieldVoltageadvantagesalternating currentangle with fieldarea vectorbrusheschanging fluxcharged particle in magnetic fieldcircular coilcircular motioncommutatorcompass deflectioncross productcurrentcurrent detectioncurrent ratiodirection findingdistancedomestic wiringearth wireeffective lengthefficiencyelectric generatorelectric motorelectrical safetyelectromagnetelectromagnetic inductionenergy conversionflux changeforce on conductorfrequencyfusefuse ratinggalvanometerideal transformerinduced EMFinduced currentlive wireloss reductionmagnetic effectmagnetic effect of currentmagnetic fieldmagnetic field at centremagnetic field formulamagnetic field linesmagnetic field strengthmagnetic fluxmagnetic forcenumber of turnsoverloadingparallel circuitparallel conductorsparallel connectionpeak EMFpeak voltagepermanent magnetpolarity reversalpolespowerpower calculationpower losspower transmissionpropertiesrate of changerelative motionrotation speedrpm conversionshort circuitsinusoidal EMFslip ringssoft iron coresolenoidstep-upstep-up transformerstraight conductortorquetorque on coiltransformertransmission efficiencytransmission lossturnsturns and radiusturns ratiovoltage and loss

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