Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 31, Problem 8PLA
To determine
The value of the resistance needed and how it must be connected to the galvanometer to form a full-scale ammeter of
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Using Ohm’s Law and the power equation, make a formula for electric power that only uses current and resistance. To do this, plug in what V= from Ohm’s Law in for V in the power equation. Then simplify. Show all your work below:
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- A current carrying rail of an electric train has a cross section area of 6.3 x 103 m2 and is made of steel with a resistivity of 3.6 x 10-7 Q-m. Find the resistance of 500 m of track. Please show your work.arrow_forwardThe resistivity of unknown metal is 1.72 x 10 -8 -m. A metal wire is 15.0 m long, and thewire diameter is 0.0500 cm. What is the resistance of the wire? Show your work.arrow_forwardWhat is the equivalent resistance between the two terminals in the diagram below? Show your work?arrow_forward
- Suppose you are to make a circuit as a project. How many 5 ohms resistors will you use to prepare a 12.5 ohms for a given project? How will you connect?arrow_forwardNEED HELP PLEASE NOTE: KINDLY WRITE THE SOLUTIONS ON A SEPARATE SHEET OF PAPER 1. A wire 5 m long and 1mm in diameter allows a current of 0.5 A to pass when the potential difference between the ends of the wire is 6 volts. (a) what is the resistance of the wire? (b) what is the value for the resistivity of the metal from which the wire is made?arrow_forwardUsing Ohm’s Law and the power equation, make a formula for electric power that only uses voltage and resistance. To do this, rearrange the variable in Ohm’s Law so that it is I = instead of V = and plug that answer in for I in the power equation. Then simplify. Show all your work below:arrow_forward
- Given the circuit below, calculate the voltage drop on the 12 -ohm and 28-ohm resistor in V:arrow_forwardFour resistors and a 6 V battery are arranged as shown in the circuit diagram below. What is the equivalent resistance (in Ω) of the circuit? [round your final answer to zero decimal places]?arrow_forwardTwo pith balls, each with a mass of 1.4 g, are attached to non-conducting threads and suspended from a common hook. Each thread has a length of 16.2 cm. The balls are then given an identical charge, which causes them to separate. In equilibrium, the threads are separated by an angle of 6.9°. Calculate the charge on each pith ball, in coulombs (C). Be clear and show all your work.arrow_forward
- Answer the following questions using the circuit shown below, What is the total resistance of the circuit? What is the value of the voltage at the points labelled 1, 2, 3, and 4? What is the power dissipated by each resistor?arrow_forwardFor the circuit below, what is the total charge stored?arrow_forwardexplain in paragraph form on how do the minimum resistance, maximum current and parallel connection relates to each other, including their formula? and why does the parallel connection have a lower resistance?arrow_forward
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