A child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200 Ω inseries with a 1.53-V carbon-zinc dry cell having a 0.100- Ω internal resistance. The load resistance is 10.0 Ω . (a) Draw a circuit diagram of the toy and itsbatteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
A child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200 Ω inseries with a 1.53-V carbon-zinc dry cell having a 0.100- Ω internal resistance. The load resistance is 10.0 Ω . (a) Draw a circuit diagram of the toy and itsbatteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
A child's electronic toy is supplied by three 1.58-V alkaline cells having internal resistances of 0.0200
Ω
inseries with a 1.53-V carbon-zinc dry cell having a 0.100-
Ω
internal resistance. The load resistance is 10.0
Ω
. (a) Draw a circuit diagram of the toy and itsbatteries, (b) What current flows? (c) How much power is supplied to the load? (d) What is the internal resistance of the dry cell if it goes bad, resulting in only 0.500 W being supplied to the load?
(a) Find the voltage drop in an extension cord having a 0.06 2 resistance and through which 4.5 A is
flowing.
V=
V
(b) A cheaper cord utilizes thinner wire and has a resistance of 0.35 2. What is the voltage drop in it
when 4.5 A flows?
V=
V
(c) Why is the voltage to whatever appliance is being used reduced by this amount? What is the
effect on the appliance?
The voltage supplied to whatever appliance is being used is reduced because the total voltage drop
from the wall to the final output of the appliance is
So, if the voltage drop
across the extension cord is large, the voltage drop across the appliance is significantly
so the power output by the appliance can be significantly
reducing the ability of the appliance to work properly.
Find the power dissipated in each of these extension cords:
(d) an extension cord having a 0.06 resistance and through which 4.5 A is flowing;
P=
✔W
(e) a cheaper cord utilizing thinner wire and with a resistance of 0.35 2.;
P=
W
(f) Which extension cord…
(A) Find the voltage drop in an extension cord having a 0.060 Ω resistance and though which 5.00 A is flowing. (B) A cheaper cord utilizes thinner wire and has a resistance of 0.300 Ω. What is the voltage drop in it when 5.00 A flows? (C)Why the voltage to whatever appliance is being used reduced by this amount? What is the effect on the appliance?Single choice.
Why the voltage to whatever appliance is being used reduced by this amount? What is the effect on the appliance?
A 12.00-V battery has an internal resistance of a tenth of an ohm. (a) What is the current if the battery terminals are momentarily shorted together? (b) What is the terminal voltage if the battery delivers 0.25 amps to a circuit?
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