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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",5,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"LyvsWs9ZtF5XyBICGCDZ3YG6ck8wvJ","q","An electric kettle with negligible heat capacity is rated at 2000W. If 2.0kg of water is put in it, how long will it take the temperature of water to rise from 20^OC to 100^OC? [specific heat capacity of water = 4200Jkg^-1k^-1]","ans",[414],1,"1995","course","physics","exp","Heat energy = Elect. energy
\n
\nmc\\(\\theta\\) = power x time
\n
\n2 x 4200 x (100 - 20) = 2000 x t
\n
\nt = 336s","opts",[422,423,424,425],"420S","336S","168S","48S",16,"16","initComment","initReply","actionData","errors"]

JAMB - Physics (1995 - No. 16)

Explanation

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