The electromotive force and internal
resistance of the dry cell in the
circuit
below is 1.5 V and 0.5 ohm respectively.
A. 0V
B. 1.5V
C. Less than 1.5 V
D. More than 1.5 V
Ans: C
E = V + Ir
1.5 = V + I(0.5) , then rearrange he equation,
V= 1.5 – 0.5(I)
Thus V is less than 1.5V
Which circuit can be used to determine the electromotive force of a battery? (SPM
05)
Ans: C , If the switch is opened, the voltmeter across battery will give the e.m.f reading
3 comments:
cikgu,,saya tak reti nak baca gambar rajah di atas???cam ne nak kira???
ok..u kena fhm & hafal circuit utk emf experiment..then baru u fhm camana nk jwb.
Btw, soalan 1, dia suruh kira voltage of the voltmeter, so apply je formula emf,
E = V + IR... V= voltage of voltmeter. Formula ni tak dibagi masa xm..so tlg hafal
...please where can I buy a unicorn?
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