Question

A nonideal ammeter that has an internal resistance of 0.303 ? is connected in series with...

A nonideal ammeter that has an internal resistance of 0.303 ? is connected in series with a 3.00-V battery and a 40.0-? resistor.

By what percentage does the presence of the ammeter change the current measurement?

Iammeter?I0/I0 =

Homework Answers

Answer #1

Current flow through battery is given as,

=

= 0.075 A
When Ammeter is connected in series, total resistance = R + r
where 'r' is resistance of the ammeter,
Hence Current in Ammeter Io is given as,

=

= 0.0744 A

% change =

=

= 0.8%

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. A) A 13-Ω coffee maker and a 16-Ω frying pan are connected in series across...
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...
An ammeter with resistance 1.42 Ω is connected momentarily across a battery, and the meter reads...
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) What is the equivalent resistance of six resistors connected in series with an 18.0-V battery...
(a) What is the equivalent resistance of six resistors connected in series with an 18.0-V battery if each resistor has a value of 20.0 Ω? _______Ω (b) Determine the current flowing through each of the six resistors. _______A (c) If the six resistors were instead connected in parallel across the battery, what would be the equivalent resistance? _________ Ω (d) Determine the current through each resistor for this parallel connection. _________A
Chapter 18, Problem 1 A 47- resistor and a 29- resistor are connected in series across...
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...
The resistance of a coil is measured by the ammeter–voltmeter method. With the voltmeter connected across...
The resistance of a coil is measured by the ammeter–voltmeter method. With the voltmeter connected across the coil, the readings on the ammeter and voltmeter are 0.4 A and 3.2 V respectively. The resistance of the voltmeter is 500 Ω. Calculate: (a) the true value of the resistance; (b) the percentage error in the value of the resistance if the voltmeter current were neglected.
Two resistors 1.00 ohms and 2.00 ohms are connected in parallel, then they are connected to...
Two resistors 1.00 ohms and 2.00 ohms are connected in parallel, then they are connected to 3.00 ohms resistor and a 9.00 V battery in series to complete a circuit. a. What is the equivalent resistance of this circuit? b. What is the current through the 1.00 Ohms resistor? c. What is the voltage on 3.00 ohms resistor? d. What is power dissipated on 2.00 ohm resistor?
Resistor R1=3.0 Ohm is connected in series to a parallel combination of R2=9.0 Ohm and R3=7.0...
Resistor R1=3.0 Ohm is connected in series to a parallel combination of R2=9.0 Ohm and R3=7.0 Ohm. The combination of three resistors is connected to a real battery of emf 12.0 V. Find internal resistance of a battery if current through a battery is 0.40 A. Give answer in Ohms.
Assume that E = 59.5 V . The battery has negligible internal resistance I cant copy...
Assume that E = 59.5 V . The battery has negligible internal resistance I cant copy the picture, but R1= 3.00 Ω ,                                            R2= 6.00 Ω(underneath R1) , R3(right next to R1)= 12.00 Ω,                                                                                          R4(Underneath R3)= 4.00Ω A) Compute the equivalent resistance of the network B) Find the current in the 3.00 Ω resistor. C) Find the current in the 6.00 Ω resistor. D) Find the current in the 12.0 Ω resistor. E) Find the current in the 4.00 Ω...
1. What are the advantages of connecting batteries in: (a) series (b) parallel 2. (a) A...
1. What are the advantages of connecting batteries in: (a) series (b) parallel 2. (a) A 2 Ω resistor is connected to a 5-V power supply. (i) What is the current through the resistor? (ii) How much power is delivered to the resistor? (b) A 5 V battery having delivers 0.1 A when connected to a 10 Ω load. What is the internal resistance of the battery?
A 3.0 resistor, an 6.0 resistor, and a 15 resistor are connected in series with a...
A 3.0 resistor, an 6.0 resistor, and a 15 resistor are connected in series with a 29 V battery. (a) What is the equivalent resistance? _______ (b) What are the currents in each resistor? _______A (3.0  resistor) _______ A (6.0  resistor) _______ A (15  resistor) (c) Repeat for the case in which all three resistors are connected in parallel across the battery. _______  (equivalent resistance) _______A (3.0  resistor) _______A (6.0  resistor) _______ A (15  resistor)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT