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1-A battery having an emf of 9.00 V delivers 117 mA when connected to an 72.0 Ω load. Determine the internal resistance of the battery
2- Figure shows a circuit diagram. Determine the current,
3-An electric heater is rated at 1300 W, a toaster is rated at1000 W, and an electric grill is rated at 1 500 W. The three appliances are connected in parallel to a common 120-V circuit.(a) How much current does each appliance draw?
I
1-A battery having an emf of 9.00 V delivers 117 mA when connected to an 72.0 Ω load. Determine the internal resistance of the battery
7210117
93
R
II
IRr
3-An electric heater is rated at 1300 W, a toaster is rated at1000 W, and an electric grill is rated at 1 500 W. The three appliances are connected in parallel to a common 120-V circuit.(a) How much current does each appliance draw?
A 120
1500
A 120
1000
A 120
1300
V
PI
V
PI
V
PI
grill
toaster
heater
2- Figure shows a circuit diagram. Determine the current,
I
AI
I
IIII
Vi
i
001.05000
5
050005
0500251500100050200020
0