Physics Plus Two.pdf - model question papers
Physics Plus Two.pdf - model question papers
Physics Plus Two.pdf - model question papers
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9. R€ntya makes the following oircuit 9.<br />
to mdasure the emf of a cell<br />
4ilo1€olcY, aDAd,Jls g6tRc€6tlml.<br />
'<br />
She says that the voltm€ter reading<br />
will give the emfofthe cell.<br />
(a) The PhYsics teacher says thal<br />
it is not Possible to measure<br />
the emf of the cell in this uaY'<br />
Jusd$ this stalem€ttl.<br />
(b) Explain with a circuit diagram<br />
tfffirE$idd to measure the emf<br />
(l)<br />
of a cell with a Potentiometer<br />
if<br />
You are given another<br />
standord cell (whose e m f is<br />
kno\tt) (3)<br />
OR<br />
9. The th€rmat v€locity of electron $<br />
about 106 n/s and drift velocity is<br />
about I 0-3 m-/s<br />
(a) what is meant bY &ift<br />
veloctry /<br />
(b) Obtain a reldi€|r between drift<br />
0)<br />
velocity and clectrie cunent (3)<br />
9.<br />
€Qao flDd6,J1:iloer aolcdgalg{i<br />
ol(lDl6ld cocol(o166tlo gq.ooro..Ood'<br />
6{)fiij ool aloo)l(Irrl.<br />
(a)<br />
(gorDlc"jtr6, !8o<br />
"olauldad<br />
o'loril(Dld o(ll)Cibq<br />
fS."Oo."O.d. 6{81.'idl@cd<br />
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