AQA A LEVEL PHYSICS PAPER 2 QUIZZES WITH
100% CORRECT ANSWERS.
Why,does,fusion,cause,energy,release?,,,ANS,-
The,total,mass,of,the,single,product,is,less,than,the,mass,of,the,two,original,reactants,,excess,mass,is,conv
erted,to,energy.
Faraday's,Law,,,ANS,-
The,induced,e.m.f,in,a,circuit,is,equal,to,the,rate,of,change,of,flux,linkage,through,the,circuit.
Lenz's,Law,,,ANS,-
The,direction,of,induced,current,is,always,such,to,oppose,the,change,that,causes,the,current.
Peak,E.M.F,,,ANS,-BAN2pi/T.
How,to,find,escape,velocity.,,,ANS,-Equate,kinetic,energy,and,work,done,in,a,gravitational,field.
Work,done,on,expanding,a,gas.,,,ANS,-W=p*change,in,volume.
Comparing,rate,of,fusion,,,ANS,-
Larger,radius,(more,protons,and,neutrons),means,more,fusion,as,the,electrical,potential,energy,is,smaller,
as,the,nuclei,are,further,apart.,
More,protons,leads,to,a,larger,charge,which,means,fusion,is,less,likely,to,occur,as,more,energy,is,required
.
National,Grid,System,,,ANS,-
High,voltage,transmission,,which,leads,to,low,current,in,the,cables,,reducing,power,loss.
Causes,of,transformer,inefficiency,,,ANS,-Induced,eddy,currents.
The,reversal,of,magnetism.
Poor,insulation,between,the,primary,and,secondary,coil.
, Reducing,transformer,inefficiency,,,ANS,-
Using,a,soft,iron,core,to,allow,easy,magnetisation,and,demagnetisation.
Laminating,the,core.
Using,thick,wires,,especially,in,the,secondary,coil,of,step-down,transformers.
Using,a,core,that,allows,all,the,flux,due,to,the,primary,coil,to,be,linked,to,the,secondary,coil.
Back,emf,,,ANS,-
Emf,induced,in,the,spinning,coil,of,an,electric,motor,or,in,any,coil,in,which,the,current,is,changing.,Acts,ag
ainst,the,change,of,applied,pd.
Binding,Energy,of,a,Nucleus,,,ANS,-
The,work,that,must,be,done,to,separate,a,nucleus,into,its,constituent,protons,and,neutrons.
Binding,Energy,per,Nucleon,,,ANS,-
The,average,work,done,per,nucleon,to,separate,a,nucleus,into,its,constituent,parts.
Ideal,Gas,,,ANS,-A,gas,which,obeys,Boyle's,Law.
Boyle's,Law,,,ANS,-
For,a,fixed,mass,of,gas,at,constant,temperature,,pressure,is,inversely,proportional,to,volume.
Charles',Law,,,ANS,-
For,a,fixed,mass,of,an,ideal,gas,at,constant,pressure,,its,volume,is,directly,proportional,to,its,absolute,tem
perature.
Control,Rods,,,ANS,-Rods,made,of,a,neutron-
absorbing,substance,such,as,cadmium,or,boron,that,are,moved,in,or,out,of,the,core,of,a,nuclear,reactor,t
o,control,the,rate,of,fission.
Coolant,,,ANS,-
A,fluid,that,is,used,to,prevent,a,nuclear,reactor,becoming,too,hot.,It,is,pumped,through,the,core,of,he,rea
ctor,to,transfer,thermal,energy,from,the,core,to,a,heat,exchanger.
100% CORRECT ANSWERS.
Why,does,fusion,cause,energy,release?,,,ANS,-
The,total,mass,of,the,single,product,is,less,than,the,mass,of,the,two,original,reactants,,excess,mass,is,conv
erted,to,energy.
Faraday's,Law,,,ANS,-
The,induced,e.m.f,in,a,circuit,is,equal,to,the,rate,of,change,of,flux,linkage,through,the,circuit.
Lenz's,Law,,,ANS,-
The,direction,of,induced,current,is,always,such,to,oppose,the,change,that,causes,the,current.
Peak,E.M.F,,,ANS,-BAN2pi/T.
How,to,find,escape,velocity.,,,ANS,-Equate,kinetic,energy,and,work,done,in,a,gravitational,field.
Work,done,on,expanding,a,gas.,,,ANS,-W=p*change,in,volume.
Comparing,rate,of,fusion,,,ANS,-
Larger,radius,(more,protons,and,neutrons),means,more,fusion,as,the,electrical,potential,energy,is,smaller,
as,the,nuclei,are,further,apart.,
More,protons,leads,to,a,larger,charge,which,means,fusion,is,less,likely,to,occur,as,more,energy,is,required
.
National,Grid,System,,,ANS,-
High,voltage,transmission,,which,leads,to,low,current,in,the,cables,,reducing,power,loss.
Causes,of,transformer,inefficiency,,,ANS,-Induced,eddy,currents.
The,reversal,of,magnetism.
Poor,insulation,between,the,primary,and,secondary,coil.
, Reducing,transformer,inefficiency,,,ANS,-
Using,a,soft,iron,core,to,allow,easy,magnetisation,and,demagnetisation.
Laminating,the,core.
Using,thick,wires,,especially,in,the,secondary,coil,of,step-down,transformers.
Using,a,core,that,allows,all,the,flux,due,to,the,primary,coil,to,be,linked,to,the,secondary,coil.
Back,emf,,,ANS,-
Emf,induced,in,the,spinning,coil,of,an,electric,motor,or,in,any,coil,in,which,the,current,is,changing.,Acts,ag
ainst,the,change,of,applied,pd.
Binding,Energy,of,a,Nucleus,,,ANS,-
The,work,that,must,be,done,to,separate,a,nucleus,into,its,constituent,protons,and,neutrons.
Binding,Energy,per,Nucleon,,,ANS,-
The,average,work,done,per,nucleon,to,separate,a,nucleus,into,its,constituent,parts.
Ideal,Gas,,,ANS,-A,gas,which,obeys,Boyle's,Law.
Boyle's,Law,,,ANS,-
For,a,fixed,mass,of,gas,at,constant,temperature,,pressure,is,inversely,proportional,to,volume.
Charles',Law,,,ANS,-
For,a,fixed,mass,of,an,ideal,gas,at,constant,pressure,,its,volume,is,directly,proportional,to,its,absolute,tem
perature.
Control,Rods,,,ANS,-Rods,made,of,a,neutron-
absorbing,substance,such,as,cadmium,or,boron,that,are,moved,in,or,out,of,the,core,of,a,nuclear,reactor,t
o,control,the,rate,of,fission.
Coolant,,,ANS,-
A,fluid,that,is,used,to,prevent,a,nuclear,reactor,becoming,too,hot.,It,is,pumped,through,the,core,of,he,rea
ctor,to,transfer,thermal,energy,from,the,core,to,a,heat,exchanger.
