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Electricity and Magnetism
Page 3
Questions (3,284)
According to Coulomb's Law, the amount of electric force depends on which two things?
a the size of the charge on each of the two
1 answer
asked by
e
9 views
What is the effective capacitance of Three capacitance in which 2ñF and 6ñF connected in parallel then 2ñF is connected in
2 answers
asked by
Beejay
76 views
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What is the effective capacitance of Three capacitance in which 2ñF and 6ñF connected in parallel then 2ñF is connected in
4 answers
asked by
Beejay
86 views
Portfolio: you will design an experiment to investigate the relationship between the number of coil loops and the strength of a
5 answers
asked by
Melody
1,975 views
A charged rod of length 21cm and total charge -7.5muC is bent into a three-quarter circle symetric about the x-axis as shown
5 answers
asked by
nisha
1,045 views
A 1500-W heater is designed to be plugged into a 120-V outlet.
What current will flow through the heating coil when the heater is
4 answers
asked by
Lanise
3,646 views
Where is the magnetic field the strongest?
a The magnetic field is the same strength no matter where you are b Close to the
1 answer
asked by
social studies
71 views
Why is glass a good insulator?
* 1 point The atoms in glass hold on tightly to their negatively charged particles. The atoms in
1 answer
asked by
MrTang
115 views
find the number of free electrons in a copper conductor having a diameter of 0.064 in. and a length of 1000ft.
5 answers
asked by
Marc Eugene Adriano
5,978 views
A 1mm cross section of copper wire is isolated. The charge that flows through
the cross section is Q t = 4t^2 + 5 How much
5 answers
asked by
mark
1,892 views
Please help and do it step by step all parts of questions and use:
T = time(s) I=current (amps) Q=net charge on object (Coulombs)
3 answers
asked by
cylinder
529 views
Which statement about materials used as insulators and conductors is correct?
A) Conductors prevent electricity from transferring
2 answers
asked by
ray
227 views
A pair of horizontal plates are situated in a vacuum and separated by a distance of 1.8cm. What potential energy would need to
3 answers
asked by
Anonymous
1,199 views
The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small
5 answers
asked by
Ace
3,493 views
A student is investigating the distribution of charge in a conductor. He attaches two unopened soda cans on their sides to two
2 answers
asked by
Ken
136 views
Seamus made an electromagnet from an iron nail, a piece of copper wire with three coils spread out across the nail, and a
29 answers
asked by
Anonymous ;)
314 views
Brian made an electromagnet in his science class. He spread out several paper clips, all made of the same material and the same
4 answers
asked by
Anonymous ;)
366 views
Which of the following statements about electrical charges is true?
Two positive charges repel each other. Observing a set of
6 answers
asked by
dOrA
479 views
Which of the following is the process of charging a conductor by bringing it near another charged object and then grounding the
1 answer
asked by
Anonymous ;)
157 views
What results from a wire carrying a current?
a an electric field b beams of white light c the dispersion of photons d a magnetic
3 answers
asked by
Anonymous ;)
287 views
Which of the following will decrease the electrical force between two charges? (Select all that apply)
a increasing the size of
1 answer
asked by
6
89 views
50.0pJ of energy is stored in a 3.00cm × 3.00cm × 3.00cm region of uniform electric field. What is the strength of the field?
4 answers
asked by
Anonymous
3,705 views
In 1–2 sentences, explain how to make an electromagnet.
3 answers
asked by
the real BARNY THE DINO :)
357 views
A straight horizontal sretch of copper wire carries a current of 28 A .What are the magnitude and direction of the magnetic
4 answers
asked by
angy
1,125 views
A potential difference of 4.75 kV is established between parallel plates in airf the air becomes ionized (and hence electrically
5 answers
asked by
Sally
5,288 views
Calculate the number of coulombs of positive charge in 261 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton;
3 answers
asked by
dave
1,536 views
A wall has a negative charge distribution producing a uniform horizontal electric field.
A small plastic ball of mass 0.0261 kg,
2 answers
asked by
Joila
963 views
Which of the following is NOT a way you can strengthen an electromagnet?
a Increasing the voltage of a battery b Using thicker
1 answer
asked by
kali
169 views
a metallic object is given a positive charge by induction, does the mass change (increase, decrease, same)? what if given a
4 answers
asked by
jerry
1,323 views
A 24-V battery is connected in series with a resistor and an inductor, with R = 5.6 Ω and L = 2.0 H, respectively.
(a) Find the
4 answers
asked by
Help
5,871 views
A charge of -6.8 micro-Coulombs is placed at x = 0, y = 0. A charge of -18.5 micro-Coulombs is placed at x = 0, y = +37 cm.
1 answer
asked by
Jessica
663 views
Two wires support an electricity pole. if the wires make angles of 58°and 67° with the ground and |AB|=21m, calculate the
4 answers
asked by
peter
1,627 views
An ac source of 50v,100÷πHz is connected in
series with an inductor of inductance L ad a resistor of resistance R.the current
3 answers
asked by
maths
692 views
Using Coulomb's Law, if the size of one of the charges increases (and the distance remains the same), what happens to the
1 answer
asked by
T
113 views
RCL Circuits electricity!?
A 50V, 50Hz supply is connected to a series circuit consisting of a resistance, a 20mH inductor and a
4 answers
asked by
Claire
605 views
If a circuit has a 3.9 k ohms resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the
2 answers
asked by
Mario
509 views
two charges q1=-2uc and q2=3uc are placed at a distance of 6cm from each other. if rubber (Er=2.94) is placed between charges,
1 answer
asked by
zeeshan
1,196 views
when an electric current flows through a long conductor, each free electron moves? A)from one end of the conductor to the other
1 answer
asked by
angela
828 views
A device consume 100w of power when connected to a 100 v source.
Calculate its resistance
2 answers
asked anonymously
94 views
Discus electromotive force with example
2 answers
asked by
Harrison
104 views
What is the resistivity of a cylindrical material wire whose length has a resistance of 2.0 and the diameter of the wire is 0.5
4 answers
asked by
Harrison
110 views
What phenomenon explains the decrease in resistance in nonmetallic conductors with increase in temperature
2 answers
asked by
Harrison
68 views
Area of Conductor
2 answers
asked by
Harrison
110 views
Discus, explain and formularize the factors affecting electric resistance of a conductor
2 answers
asked by
Harrison
109 views
How much is a galvanometer
2 answers
asked by
Harrison
65 views
He' ions with a charge +e move at 1.00 x 10 m/s in a straight line through a velocity selector. Suppose the He' ions are
2 answers
asked by
James
109 views
Explain the term thermal electric effect and thermocouple
2 answers
asked by
Kalu prosper
80 views
An electric lamp is marked 240watts,60watt.what is it's resistance when it is operated at the correct voltage
5 answers
asked by
Kalu prosper
122 views
Three 3.0 ohm resistors are connected in parallel. What is the equivalent resistance
2 answers
asked anonymously
103 views
The resistance of a piece of wire of length is 20m and cross-sectional area 8×10^-6m^2 is ? [Resistivity of wire =5×10^-7 ohm]
2 answers
asked anonymously
120 views
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