Question: A circuit you're building needs an ammeter that goes from 0 mA to a full-scale reading of 50 mA. Unfortunately, the only ammeter in the

A circuit you're building needs an ammeter that goes from 0 mA to a full-scale reading of 50 mA. Unfortunately, the only ammeter in the storeroom goes from 0μA to a full scale reading of only 500μA. Fortunately, you've just finished a physics class, and you realize that you can make this ammeter work by putting a resistor in parallel with it, as shown in FIGURE P28.57. You've measured that the resistance of the ammeter is 50.0Ω , not the 0Ω of an ideal ammeter.

-Your ammeter 500 A ammeter R A FIGURE P28.57

a. What value of R must you use so that the meter will go to full scale when the current I is 50 mA?
b. What is the effective resistance of your ammeter?

-Your ammeter 500 A ammeter R A FIGURE P28.57

Step by Step Solution

★★★★★

3.44 Rating (170 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Model Assume ideal connecting wires Visualize Because the ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (2 attachments)

1442_6054778bbe378_694438.pdf

180 KBs PDF File

1442_6054778bbe378_694438.docx

120 KBs Word File

Students Have Also Explored These Related Physics Scientists and Engineers Questions!

A galvanometer with a full-scale sensitivity of 2000 A has a coil resistance of 100-. It is to be used in an ammeter with a full-scale reading of 30 A. (a) Should you use (1) a shunt resistor, (2) a...

A milliammeter reads 35 mA full scale. It consists of a 0.20- resistor in parallel with a 33- galvanometer. How can you change this ammeter to a voltmeter giving a full-scale reading of 25 V without...

A millimeter reads 10 mA full scale. It consists of a 0.20- resistor in parallel with a 33- galvanometer. How can you change this ammeter to a voltmeter giving a full-scale reading of 10 V without...

A circuit you're building needs an ammeter that goes from $0 \mathrm{~mA}$ to a full-scale reading of $50.0 \mathrm{~mA}$. Unfortunately, the only ammeter in the storeroom goes from \(0 \mu...

A circuit youre building needs an ammeter that goes from 0 mA to a full-scale reading of 50 mA. Unfortunately, the only ammeter in the storeroom goes from 0 A to a full-scale reading of only 500 A....

A circuit you're building needs a voltmeter that goes from $0 \mathrm{~V}$ to a full-scale reading of $5.0 \mathrm{~V}$. Unfortunately, the only meter in the storeroom is an ammeter that goes...

Theory: Voltage, V [Volts] is created by separated positive and negative charges (hence batteries have a positive and a negative terminal). Current, / [Amps] is the rate at which the electrons are...

So you want to be and Interpreter? An Introduction to Sign Language Interpreting. Class Participation/Canvas (Collaborative Discussions) What were the key points gleaned from the reading? Describe...

IN REGARDS TO THE TWO CASES PROVIDED BELOW, For this assignment, please draft on the following topic: UNAUTHORIZED PRACTICE OF LAW ( UPL) and the practical applications of UPL in the real world The...

IN THE CASE PROVIDE BELOW, Why was unauthorized practice of law (UPL) the focus of this case? Which facts led to the UPL allegations? Did you agree or disagree with the outcome of the case? Why?...

After renting an apartment in North York for many years, Monica and Chandler have decided to buy a house close to their favourite park, Westchester Park in Brampton, Ontario. They plan to take many...

Assume that, over the course of a year, the inflation rate in Peru was 14.5% and in America 1.7%. Then, according to the relative purchasing power parity, what would you expect for the exchange rate...

8. Why is scarcity central to economics?

A team of 5 analysts is about to examine the earnings prospects of 20 corporations. Each of the 5 analysts will study 4 of the corporations. These analysts are not equally competent. In fact, one of...

James and Sarah stand on a stationary cart with frictionless wheels. The total mass of the cart and riders is 130 kg. At the same instant, James throws a 1.0 kg ball to Sarah at 4.5 m/s, while Sarah...

Squids rely on jet propulsion, a versatile technique to move around in water. A 1.5 kg squid at rest suddenly expels 0.10 kg of water backward to quickly get itself moving forward at 3.0 m/s. If...

A 140 g baseball is moving horizontally to the right at 35 m/s when it is hit by the bat. The ball flies off to the left at 55 m/s, at an angle of 25 above the horizontal. What are the magnitude and...

Pitt Enterprises manufactures jeans. All materials are introduced at the beginning of the manufacturing process in the Cutting department. Conversion costs are incurred uniformly throughout the...

Principles of Risk and Management Insurance (12 ed) Ch 21 Case Application James and Megan Webb recently purchased a home for $300,000. The home is insured under an HO-3 policy for $250,000 with no...

Andretti Company has a single product called a Dak. The company normally produces and sells 84,000 Daks each year at a selling price of $60 per unit. The company's unit costs at this level of...