1 If the combined resistance of the potentiometer and motor in the figure below is 250 Ω, what is the current through the circuit?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nk.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (12.0K)</a>]]> A) 21 A B) 120 A C) 3000 A D) 48 mA 2 If the ammeter in the figure below were moved to the left of the light bulb, what would it read?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nl.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>]]> A) 1 A B) 0 A C) 4 A D) 2:00 AM 3 For the circuit arrangement shown in the figure below, if the battery voltage is 9.0 V and the ammeter reads 0.60 A, what is the resistance?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nm.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>]]> A) 30 Ω B) 0.06 Ω C) 5.4 Ω D) 15 Ω 4 If the the current in the circuit of the figure below is 1.5 A, what is the total resistance of the circuit?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nk.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (12.0K)</a>]]> A) 8 Ω B) 16 Ω C) 18 Ω D) 4 Ω 5 If the resistance of the lightbulb in the figure below were changed to 6 Ω, what would tha ammeter read?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nl.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>]]> A) 4 A B) 2 A C) 6 A D) 8 A 6 In the figure below, if the battery voltage were changed to 9 V, what would the ammeter reading be?
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078807220/617930/nl.JPG','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>]]> A) 3 A B) 1 A C) 2 A D) 4 A 7 A) 14.4 W B) 14.4 J C) 10.0 J D) 10.0 W 8 A) E = IR B) E = Pt C) E = P 2 t D) E = I 2 R 9 A) 1.0×103 J B) 3.6×106 J C) 3.6×106 J/s D) 1.0×103 J/s 10 A) P = I2R B) P = I 2 R C) P = VR D) P = IR 11 A) 1130 J B) 563 J C) 4500 J D) 3380 J 12 A) a magnet B) a powerful battery C) a material with zero resistance D) a meterial with a very high resistance
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