Question

With a 1400 MΩ resistor across its terminals, the terminal voltage of a certain battery is 2.64 V . With only a 5.10 Ω resistor across its terminals, the terminal voltage is 1.70 V . - Find the internal resistance of this battery. and What would be the terminal voltage if the 5.10 Ω resistor were replaced by a 7.10 Ω resistor?

Answer #1

With a 1600 MΩ resistor across its terminals, the terminal
voltage of a certain battery is 2.59 V . With only a 5.09 Ω
resistor across its terminals, the terminal voltage is 1.67 V .
1.) Find the internal emf of this battery. E = ________
V
2.) Find the internal resistance of this battery. r =
_________Ω
3.) What would be the terminal voltage if the 5.09 Ω
resistor were replaced by a 7.09 Ω resistor? V3 =
_____________...

If you connect a resistor to a battery with a given emf, the
measured terminal voltage is V. Next you connect in parallel
another resistor to the first one. As a result,
The terminal voltage increases;
The terminal voltage decreases;
The terminal voltage depends only on the internal resistance of
the battery and doesn’t depend on a load.

A battery has an emf of 15.0 V. The terminal voltage of the
battery is 12.6 V when it is delivering 14.0 W of power to an
external load resistor R.
(a) What is the value of R?
Ω
(b) What is the internal resistance of the battery?
Ω

A battery whose fem is 12V and with an internal resistance of
.05Ω. Its terminals are connected to a resistor of 3Ω.
a) find the current in the circuit and the voltage at the battery
terminals b) what is the voltage at the resistor?
c) what is the power delivered to the external resistor, the power
at the internal resistance and the total power
Note: explain step by step

1.
A) A 13-Ω coffee maker and a 16-Ω frying pan are connected in
series across a 120-V source of voltage. A 25 Ω bread maker is also
connected across the 120-V source and is in parallel with the
series combination. Find the total current supplied by the source
of voltage.
B) A new "D" battery has an emf of 1.5 V. When a wire of
negligible resistance is connected between the terminals of the
battery, a current of 25...

Chapter 18, Problem 1
A 47- resistor and a 29- resistor are connected in series across
a 24-V battery. What is the voltage across (a) the
47- resistor and (b) the 29- resistor?
Chapter 18, Problem 2
The current in a 63- resistor is 0.077 A. This resistor is in
series with a 42- resistor, and the series combination is connected
across a battery. What is the battery voltage?
Chapter 18, Problem 3
What resistance must be placed in parallel...

Phsics Problem,Please show steps.
A) You are
given a battery, which has, of course, a particular
emf and a particular internal resistance
(Rint). You decide to determine its internal resistance
and its emf by connecting an ammeter in series
with a variable resistor across the battery. By varying the
resistance you can draw more or less current from the battery. You
also use a voltmeter to measure the voltage across the terminals of
the battery. Case 1) When you
draw...

An ammeter with resistance 1.42 Ω is connected momentarily
across a battery, and the meter reads 9.78 A. When the measurement
is repeated with a 2.11@Ω meter, the reading is 7.46 A. Find (a)
the battery voltage and (b) its internal resistance.

A battery with an emf of 12.0 V shows a terminal voltage of 11.2
V when operating a circuit with four light bulbs, two in parallel
connected in series with the other two also in a parallel
arrangement, each rated at 6 W (at 12.0 V).
(a) Draw a diagram of the arrangement.
(b) What is the total external resistance of this circuit?
(c) What is the current in each bulb?
(d) What is the internal resistance of the battery?

A battery with an Emf of 12 volts is hooked up to a 125 ohm
resistor and an ammeter. The ammeter measures a current of 75
mA.
a) Calculate the internal resistance of the battery and the
actual voltage across the battery.
b) Calculate the power dissipated in the resistor and the power
generated by the battery.
c) The battery is now disconnected from the 125 ohm resistor and
connected to a 60 watt light bulb. What will be the...

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