Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 35, Problem 2PLA
To determine
The charges that would flow in the direction of current.
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What quantity is defined as the amount of current flowing past a certain point in a given amount of time?
A current of
0.2 A
goes through an electric motor for
3 min.
How many coulombs of charge flow through it during that time?
It is desirable to calculate the force on wire 1 from the other 3 wires:
(The current of the wires is shown in the figure).
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Physics Laboratory Manual
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- Consider a square rod of material with sides of length L = 3.00 cm with a current density of J=J0eaxk=(0.35Am2)e(2.1103m1)xk as shown below. Find the current that passes through the face of the rod.arrow_forwardThe current supplied by a battery in a portable device is typically 0.15 A. Find the number of electrons passing through the device in one hour.arrow_forwardSPEAR, a storage ring about 72.0 m in diameter at the Stanford Linear Accelerator (closed in 2009), has a 20.0-A circulating beam of electrons that are moving at nearly the speed of light. (See Figure 20.39.) How many electrons are in the beam? Figure 20.39 Electrons circulating in the storage ring called SPEAR constitute a 20.0-A current. Because they travel close to the speed of light, each electron completes many orbits in each second.arrow_forward
- The batteries of a submerged non-nuclear submarine supply 1000 A at full speed ahead. How long does it take to move Avogadro’s number (6.02 1023) of electrons at this rate?arrow_forwardFor the two incandescent lightbulbs shown in Figure 21.12, rank the currents at points a through f, from greatest to least.arrow_forwardWhat is the value of the unknown current?arrow_forward
- Consider positive and negative charges moving horizontally through the four regions in Figure. Rank the magnitudes of the currents in these four regions from lowest to highest. (Ia is the current in Figure a, Ib the current in Figure b, etc.)arrow_forwardIn metals, mobile electrons move when there is an electric current. Current can then be thought of as the number of electrons that move past a point per second, times the charge of an electron. If electrons move to the right through a metal wire, what would be the direction of the current, by convention?arrow_forwardSupposed to static charge of 0.23 uC moves from your finger to a metal door knob in 1.15 ms. What is the current, in amperes?arrow_forward
- Answer all three parts What is the magnitude of the current through R3? What is the magnitude of the current through R2? What is the magnitude of the current through R1?arrow_forwarda current of 0.2 A good through an electric motor for 6 min how many columbs of charge flow through it during that timearrow_forwardAn electric current through a wire is 5.0 Coulombs every 3.5 seconds. What is the magnitude of this current?arrow_forward
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