3a)v) Slope, s =ΔI^-1/ΔV^-1 =3.0-0.5/3.0-0.5 =2.5/2.5 =1.0V/A
3a)vi) From, S=ΔI^-1/ΔV^-1 1.0=V/0.75 V=0.75v
(3avii) PRECAUTIONS: -i ensured tight connections of connecting wires. -I ensured that the key was open,to avoid the running down of the battery.
(3bi) Internal resistance (r)-this is the opposition of current flow through the electrolytic cells. (3bi) -heat effect -chemical effect Heat effect is used in electric cooker for cooking.
(3biii) ~ is donated with ohms r=1~ , R=6~ , V=9v , E=? I=E/R+r V/R=E/R+r 9/6=E/R+r Cross multiply 6E=9×7 6E=63 Making E subject of formula E=63/3 =10.5v So therefore,E.M.F of the cell=10.5v =========================
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