{"id":18487,"date":"2021-09-25T18:43:45","date_gmt":"2021-09-25T13:13:45","guid":{"rendered":"https:\/\/apboardsolutions.guru\/?p=18487"},"modified":"2021-09-25T19:24:11","modified_gmt":"2021-09-25T13:54:11","slug":"ap-7th-class-science-bits-chapter-7","status":"publish","type":"post","link":"https:\/\/apboardsolutions.guru\/ap-7th-class-science-bits-chapter-7\/","title":{"rendered":"AP 7th Class Science Bits Chapter 7 Electricity \u2013 Current and Its Effect with Answers"},"content":{"rendered":"

Practice the AP 7th Class Science Bits with Answers <\/a>Chapter 7 Electricity \u2013 Current and Its Effect on a regular basis so that you can attempt exams with utmost confidence.<\/p>\n

AP State Syllabus 7th Class Science Bits 7th Lesson Electricity \u2013 Current and Its Effect with Answers<\/h2>\n

Choose the correct answer.<\/span><\/p>\n

Question 1.
\n1 KW =
\nA) 10 W
\nB) 100 W
\nC) 1000 W
\nD) 10,000 W
\nAnswer:
\nC) 1000 W<\/p>\n

Question 2.
\nThe element in electric cooker is made up of
\nA) Copper
\nB) Tungstun
\nC) Aluminium
\nD) Nichrome
\nAnswer:
\nD) Nichrome<\/p>\n

\"AP<\/p>\n

Question 3.
\nWastage of electricity can be reduced by using
\nA) CFLS
\nB) Motors
\nC) Heaters
\nD) Bulbs
\nAnswer:
\nA) CFLS<\/p>\n

Question 4.
\n\"AP symbol indicates
\nA) a bulb
\nB) switch
\nC) battery
\nD) fuse
\nAnswer:
\nD) fuse<\/p>\n

Question 5.
\nTwo or more cells joined together form a
\nA) Dry cell
\nB) Battery
\nC) Transformer
\nD) MCB
\nAnswer:
\nB) Battery<\/p>\n

Question 6.
\nIf the circuit is open, then current
\nA) flows
\nB) flows or may not flow
\nC) reverses
\nD) does not flow
\nAnswer:
\nD) does not flow<\/p>\n

\"AP<\/p>\n

Question 7.
\nIn parallel combination of electrical appliances, total electrical power
\nA) Increases
\nB) Decreases
\nC) Does not change
\nD) Remain same
\nAnswer:
\nB) Decreases<\/p>\n

Question 8.
\nIn series combination of electrical appliances, total electrical power
\nA) Increases
\nB) Decreases
\nC) May increases or decreases
\nD) Does not changes.
\nAnswer:
\nA) Increases<\/p>\n

Question 9.
\nPositive terminal of the dry cell is made of
\nA) graphite
\nB) copper
\nC) zinc
\nD) iron
\nAnswer:
\nA) graphite<\/p>\n

Question 10.
\nNegative terminal of the dry cell is made of
\nA) graphite
\nB) copper
\nC) zinc
\nD) iron
\nAnswer:
\nC) zinc<\/p>\n

\"AP<\/p>\n

Question 11.
\nDry cell converts ………….. energy into electrical energy.
\nA) potential
\nB) chemical
\nC) magnetic
\nD) kinetic
\nAnswer:
\nB) chemical<\/p>\n

Question 12.
\nElectric iron, electric cooker contain a coil of wire made of
\nA) nichrome
\nB) zinc
\nC) iron
\nD) any one
\nAnswer:
\nA) nichrome<\/p>\n

Question 13.
\nIn electric cooker the amount of heat produced in coil depends on
\nA) thickness
\nB) material
\nC) length
\nD) all of these
\nAnswer:
\nD) all of these<\/p>\n

Question 14.
\nWastage of electricity reduced by
\nA) tube light
\nB) bed light
\nC) bulb
\nD) CFL bulb
\nAnswer:
\nD) CFL bulb<\/p>\n

\"AP<\/p>\n

Question 15.
\nOne of the following is preferable instead of fuse
\nA) MAB
\nB) MCB
\nC) MDB
\nD) MOB
\nAnswer:
\nB) MCB<\/p>\n

Question 16.
\n1 unit of power equal to
\nA) 1MW
\nB) 1MWH
\nC) 1KW
\nD) 1KWH
\nAnswer:
\nD) 1KWH<\/p>\n

Question 17.
\nMichael Faraday invented
\nA) transformer
\nB) dynamo
\nC) generator
\nD) all of these
\nAnswer:
\nD) all of these<\/p>\n

Question 18.
\nIn a dry cell what serves as a positive terminal?
\nA) Zinc metal
\nB) Ammonium chloride
\nC) Carbon powder
\nD) Carbon Rod
\nAnswer:
\nD) Carbon Rod<\/p>\n

\"AP<\/p>\n

Question 19.
\nIn a circuit the switch is in this position \"AP then the bulb is
\n\"AP
\nAnswer:
\nA)<\/p>\n

Question 20.
\n\"AP
\nIt is a
\nA) parallel connection of bulbs
\nB) series connection of cells
\nC) simple circut
\nD) parallel connection of cells
\nAnswer:
\nC) simple circut<\/p>\n

Question 21.
\n\"AP
\nIt is a
\nA) simple circut
\nB) connecting cells in parallel
\nC) connecting cells in series
\nD) connecting bulb in parallel
\nAnswer:
\nB) connecting cells in parallel<\/p>\n

\"AP<\/p>\n

Question 22.
\nL.E.D means
\nA) Light Emitting Device
\nB) Light Emitting Diode
\nC) Light Emergency Device
\nD) Light Energy Device
\nAnswer:
\nB) Light Emitting Diode<\/p>\n

Question 23.
\nThe following consume less electricity
\n\"AP
\nAnswer:
\nD)<\/p>\n

Question 24.
\nWhat is the name of this instrument?
\n\"AP
\nA) Fuse
\nB) Digital meter
\nC) Miniature circut breaker
\nD) Switch
\nAnswer:
\nC) Miniature circut breaker<\/p>\n

Question 25.
\nThe watts for 1 kilowatt
\nA) 10
\nB) 100
\nC) 1000
\nD) 10,000
\nAnswer:
\nC) 1000<\/p>\n

\"AP<\/p>\n

Question 26.
\n1 unit of electricity means
\nA) It uses up 1 watt per 1 hour
\nB) 1 kilowatt per 1 hour
\nC) 1 watt per 10 hours
\nD) 1 kilowatt per 10 hours
\nAnswer:
\nB) 1 kilowatt per 1 hour<\/p>\n

Question 27.
\nWho invented the first electric generator?
\nA) Wattson
\nB) Galileo
\nC) Faraday
\nD) James watt
\nAnswer:
\nC) Faraday<\/p>\n

Question 28.
\nCFL means
\nA) Compact Fluorescent Lamp
\nB) Compact Fluorescent Light
\nC) Colour Fluorscent Lamp
\nD) Colour Fluorescent Light
\nAnswer:
\nA) Compact Fluorescent Lamp<\/p>\n

Question 29.
\nThis instrument contains a coil of wire made up of Nichrome
\nA) Electric iron
\nB) Electric cooker
\nC) Electric heater
\nD) All of these
\nAnswer:
\nD) All of these<\/p>\n

\"AP<\/p>\n

Question 30.
\nWhich protects our house when current in a circut exceeds the safe limit.
\nA) LED
\nB) Digital meter
\nC) MCB
\nD) CFL
\nAnswer:
\nC) MCB<\/p>\n

Question 31.
\nIn a dry cell which serves as a negative terminal?
\nA) Zinc metal
\nB) Carbon Rod
\nC) Ammonium chloride
\nD) Carbon powder
\nAnswer:
\nA) Zinc metal<\/p>\n

Question 32.
\nIn parallel combination of electrical appliances, total electrical power
\nA) Increases
\nB) Decreases
\nC) Does not change
\nD) Remains same
\nAnswer:
\nB) Decreases<\/p>\n

Question 33.
\nDevice used to close or open an electric circuit is
\nA) electric bulb
\nB) battery
\nC) switch
\nD) fuse
\nAnswer:
\nC) switch<\/p>\n

\"AP<\/p>\n

Question 34.
\nSafety device used electric circuit is
\nA) electric bulb
\nB) battery
\nC) switch
\nD) fuse
\nAnswer:
\nD) fuse<\/p>\n

Question 35.
\nIt is a
\n\"AP
\nA) Connecting cells in series
\nB) Connecting cells in parallel
\nC) Connecting bulbs in series
\nD) Connecting bulbs in parallel
\nAnswer:
\nB) Connecting cells in parallel<\/p>\n

Question 36.
\n\"AP symbol represents
\nA) Fuse
\nB) Bulb
\nC) Key
\nD) Cell
\nAnswer:
\nA) Fuse<\/p>\n

Question 37.
\nIt is used to protect the circuit
\n\"AP
\nAnswer:
\nC)<\/p>\n

\"AP<\/p>\n

Question 38.
\nGuess the reasons for not glowing the bulb in the circuit.
\nA) Chemicals get exhausted
\nB) Connections are not in proper
\nC) Switch may not work properly
\nD) All the above
\nAnswer:
\nD) All the above<\/p>\n

Question 39.
\nAmong these which electric bulb consumes less power?
\nA) L.E.D. Bulb
\nB) CFL Bulb
\nC) Tubelight
\nD) Round bulb
\nAnswer:
\nA) L.E.D. Bulb<\/p>\n

Question 40.
\nThe connection of serial sets that are used in marriages
\nA) Parallel
\nB) Series
\nC) Parallel, Series
\nD) Series, Parallel
\nAnswer:
\nB) Series<\/p>\n

Question 41.
\nAfter studying the lesson electricity and its effect what safety device do you use in electric circuit?
\nA) Bulb
\nB) Battery
\nC) Switch
\nD) Fuse
\nAnswer:
\nD) Fuse<\/p>\n

\"AP<\/p>\n

Question 42.
\nName the device which “turns off’ automatically when current in a circuit exceeds the safe limit
\nA) Battery
\nB) Compressed lamp
\nC) Miniature Circuit Breaker
\nD) Switch
\nAnswer:
\nC) Miniature Circuit Breaker<\/p>\n

Question 43.
\n\"AP
\nThe circuit symbols given in the image are ……….. and …………
\nA) Battery, fuse
\nB) Battery, cell
\nC) Fuse, battery
\nD) Bulb, switch
\nAnswer:
\nA) Battery, fuse<\/p>\n

Question 44.
\nFind the correct statement from the following.
\nP: In series connection of bulbs, if one bulb gets fused, all the other bulbs will stop glowing.
\nQ: In parallel connection, if one bulb is disconnected the other bulbs continue to glow.
\nA) P is correct
\nB) Q is incorrect
\nC) Both P & Q are correct
\nD) Both P & Q are incorrect
\nAnswer:
\nC) Both P & Q are correct<\/p>\n

\"AP<\/p>\n

Question 45.
\nA safety device used to avoid fire when excessive electric current flows through a circuit is called a …………
\nA) Bulb
\nB) Fuse
\nC) Inverter
\nD) Power bank
\nAnswer:
\nB) Fuse<\/p>\n","protected":false},"excerpt":{"rendered":"

Practice the AP 7th Class Science Bits with Answers Chapter 7 Electricity \u2013 Current and Its Effect on a regular basis so that you can attempt exams with utmost confidence. AP State Syllabus 7th Class Science Bits 7th Lesson Electricity \u2013 Current and Its Effect with Answers Choose the correct answer. Question 1. 1 KW …<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[12],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts\/18487"}],"collection":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/comments?post=18487"}],"version-history":[{"count":0,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/posts\/18487\/revisions"}],"wp:attachment":[{"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/media?parent=18487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/categories?post=18487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/apboardsolutions.guru\/wp-json\/wp\/v2\/tags?post=18487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}