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Electricity and Magnetism
Page 8
Questions (3,284)
A copper wire has a resistance of 0.425 at 20.0°C, and an iron wire has a resistance of 0.455 at the same temperature. At what
4 answers
asked by
Justin
5,947 views
An equipotential surface that surrounds a point charge q has a potential of 516 V and an area of 1.01 m2. Determine q
4 answers
asked by
adam h.
2,868 views
If the electric field near a proton is 9.00 x 10^-3 N/C, what is the distance from the proton?
5 answers
asked by
Liz
886 views
Identical point charges of +2.1 ìC are fixed to diagonally opposite corners of a square. A third charge is then fixed at the
4 answers
asked by
Amy
2,860 views
Two parallel plate capacitors are identical, except that one of them is empty and the other contains a material with a
4 answers
asked by
derek
2,789 views
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 8.9 V. What
4 answers
asked by
YANA
1,818 views
A charged capacitor will discharge slowly, even if it's terminal are 'open circuit' that is ,not connected to anything this
4 answers
asked by
Hana
199 views
a capacitance of 6microfarad and another unknown capacitance are connected in series to a battery, if the potential difference
3 answers
asked by
Akinwumi
283 views
Calculate the electric field intensity of a point 15CM from a charge of 10NC.
4 answers
asked by
Ayibabarakami
1,453 views
In a thundercloud there may be an electric
charge of 54 C near the top of the cloud and −54 C near the bottom of the cloud. If
4 answers
asked by
hannah
1,236 views
two unknown resistors a and b are connected together. when they are connected in series their combined resistance is 15 ohm.
4 answers
asked by
fatih
3,738 views
A nonconducting sphere with net charge +Q uniformly distributed throughout its volume creates an electric field of magnitude E
4 answers
asked by
Brittney
956 views
A point charge of +5 μC is located at the center of a sphere with a radius of 12 cm . What is the electric flux through the
3 answers
asked by
robinho
1,776 views
A typical cell membrane is 8.0 nm thick and has an electrical resistivity of 1.3 × 107Ω.m.
(i) If the potential difference
4 answers
asked by
Jason
2,050 views
What voltage is required to store 6.90 10-5 C of charge on the plates of a 7.00-µF capacitor?
4 answers
asked by
Anonymous
1,139 views
The electric field across a cellular membrane is 1.0x10^7 N/C directed into the cell. What is the magnitude of the electric
4 answers
asked by
mrs. austin
911 views
explain the relationship between contours of constant potential and the electric field direction.
why is the electric field a
3 answers
asked by
jake
2,113 views
A current of 2.10A flows in a wire. How many electrons are flowing past any point in the wire per second?
N=_____________________
4 answers
asked by
mkm
3,518 views
You place two charges a distance r apart. Then you double each charge and double the distance between the charges. How does the
4 answers
asked by
James
2,854 views
A voltage V across a resistance R generates a current I=VR. If a constant voltage of 4 volts is put across a resistance that is
4 answers
asked by
Samuel
2,182 views
Four point charges are positioned on the rim of a circle. The charge on each of the four is +0.5 µC, +1.5 µC, -1.0 µC, and
4 answers
asked by
Anonymous
3,663 views
A 0.050-m-long wire is carrying a current of 2.0 A at right angles to a 0.15-T magnetic field. What is the magnitude of the
4 answers
asked by
sally
1,241 views
an impedance coil draws an apparent power 50-volt ampere and an active power of 40 watts solve for q factor
4 answers
asked by
Student
977 views
A device that changes mechanical energy to electrical energy by rotating a coil of wire through a magnetic field is called a(an)
7 answers
asked by
sid
3,042 views
The voltage V across a charged capacitor is given by V(t) = 2e^-0.16t volts, where t is in seconds
(A) what is the voltage V(5)
4 answers
asked by
Picard
2,461 views
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 12 cm in diameter and 45 cm in length. You
4 answers
asked by
Valerie
3,236 views
Two point charges Q1 and Q2 are 4C. They are 10cm apart. At what distance betwen the charges the net electric field will be
4 answers
asked by
Nuwaya
1,922 views
Two identical small spheres of mass 2.0g are fastened to the ends of an insulating thread of length 0.60m The spheres are
4 answers
asked by
Diana
2,501 views
A charge of −33 µC is distributed uniformly throughout a spherical volume of radius 19.0 cm. Determine the electric field (in
4 answers
asked by
Tris
1,458 views
im confused... how should i solve this when there is no resistivity value given?
The resistance of a rod with a length of 3.0 m
4 answers
asked by
kay
2,484 views
A point charge (m = 1.0 g) at the end of an insulating string of length L = 51 cm (Fig. 16-66) is observed to be in equilibrium
4 answers
asked by
Anonymous
2,681 views
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 291 N/C. At a distance r2
4 answers
asked by
Naomi
2,733 views
A neutral ball is suspended by a string.
A positively charged insulating rod is placed near the ball, which is observed to be
3 answers
asked by
Lynn
1,985 views
a battery of 12v supplies a charge of 1000C to an electric device. how much work is done by the battery in moving the charge?
4 answers
asked by
aisha
1,793 views
An electron accelerates from rest to the right, in a horizontally directed electric field. The electron then leaves the electric
4 answers
asked by
Nourjan
912 views
A thin copper rod 1m long has a mass of 50g. What should be the direction of magnetic field and the maximum current in the rod
4 answers
asked by
Raven
5,456 views
A copper wire has a resistance of 1.02 Ω at 20.0°C. What is its resistance at 60°C? The temperature coefficient of
4 answers
asked by
delisA
1,488 views
Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble
4 answers
asked by
Sally
2,414 views
An X-ray tube used for cancer therapy operates at 4.04 MV with a beam current of 23.4 mA striking a metal target. Calculate the
4 answers
asked by
will
1,595 views
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. If a
4 answers
asked by
andrew
3,155 views
A 14.0 ohm resistor is made from a coil of copper wire whose total mass is 23.0 g. What is the diameter of the wire, and how
4 answers
asked by
George
1,094 views
What is the direction of the force acting on a current-carrying conductor lying in a magnetic field?
A. It is in a direction
4 answers
asked by
sally
1,476 views
Find the equivalent resistance of the combination of resistors shown in the figure below.
R1=1.52 microohms R2= 21.1microohms
4 answers
asked by
Tee Jones
3,045 views
A wire of length 100cm and cross-sectional area 2.0*10-3cm2 has a resistance of 0.1 ohms.
calculate it's electrical conductivity?
3 answers
asked by
Albert Bonnie
1,778 views
1. in galvanic cell, in what direction do positive ion migrate to maintain a neutral charge in the half- cells?
2. in galvanic
4 answers
asked by
please need help !!
2,197 views
Find the electric field at a point midway between two charges of +39.5 ✕ 10-9 C and +72.0 ✕ 10-9 C separated by a distance
4 answers
asked by
Anonymous
1,286 views
Electric charge charge is distributed uniformly along a thin rod of length "a", with total charge Q. Take the potential to be
4 answers
asked by
Anne
1,301 views
A wire of initial length L0 and radius r0 has a measured resistance of 2.5 . The wire is drawn under tensile stress to a new
4 answers
asked by
andrew
2,750 views
Strength of Magnetic Forces Quick Check
this is correct for connexus academy 10th grade physical science as of 4/7/2023 1. What
4 answers
asked by
mmyoui
422 views
Two large horizontal, parallel metal plates are 2.0 cm apart in air and the upper is maintained at a positive potential relative
3 answers
asked by
Avodagbe Mauris
414 views
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