Questions LLC
Login
or
Sign Up
Ask a New Question
Electricity and Magnetism
Page 3
Questions (3,393)
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
1,206 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
3,504 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
144 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 ;)
323 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 ;)
373 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
485 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 ;)
164 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 ;)
292 views
A student is investigating what happens when a neutral metal sphere sitting on an insulated stand is touched by a negatively
10 answers
asked by
Anonymous ;)
820 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
93 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
3,713 views
In 1–2 sentences, explain how to make an electromagnet.
3 answers
asked by
the real BARNY THE DINO :)
378 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
1,141 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
5,296 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
1,546 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
970 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
187 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
1,335 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
5,886 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
668 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
1,635 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
700 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
120 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
611 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
517 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
1,203 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
833 views
A device consume 100w of power when connected to a 100 v source.
Calculate its resistance
2 answers
asked anonymously
97 views
Discus electromotive force with example
2 answers
asked by
Harrison
108 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
119 views
What phenomenon explains the decrease in resistance in nonmetallic conductors with increase in temperature
2 answers
asked by
Harrison
74 views
Area of Conductor
2 answers
asked by
Harrison
113 views
Discus, explain and formularize the factors affecting electric resistance of a conductor
2 answers
asked by
Harrison
114 views
How much is a galvanometer
2 answers
asked by
Harrison
71 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
116 views
Explain the term thermal electric effect and thermocouple
2 answers
asked by
Kalu prosper
85 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
126 views
Three 3.0 ohm resistors are connected in parallel. What is the equivalent resistance
2 answers
asked anonymously
108 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
125 views
What is the amplitude of the output voltage of AD624AD circuit?
V1 = 10mVpk, 1kHz VCC = 9V VEE = -9V a) 200 mV b) -10 mV c) -2V
2 answers
asked by
Anonymous
121 views
What is the resistivity of a cylindrical material wire whose length is 2.0mm a resistance of 4.0 ohms diameter of wire is 0.8mm
2 answers
asked by
Ese
129 views
Oddy currents
2 answers
asked by
Fuad Faji Jemal
69 views
potential difference, current resistance definition, abbreviation units and symbol
2 answers
asked anonymously
93 views
supposed two different material are rubbed together. Each one is brought near a charge, electric scope with no effect on the
2 answers
asked anonymously
110 views
A student wants to use the equation for Coulomb's Law to calculate the electric force between two charges. Which shows all of
4 answers
asked by
ulyjh,b
141 views
What mass of AL is deposited electronically in 30 minutes by current of 740A?
2 answers
asked by
Eebbisas
87 views
Which of the following statements is true?
The inverse of the slope of the non-ideal curve at V = V., is approximately equal to
2 answers
asked by
RAMI
113 views
Explain how to make an electromagnet.
2 answers
asked by
Milo
52 views
An electrical insulator has:
a electrons tightly bound to its atoms b electrons that freely move c more protons than electrons d
2 answers
asked by
u
95 views
An electrical insulator has:
a more protons than electrons b electrons that freely move c electrons tightly bound to its atoms d
2 answers
asked anonymously
90 views
Pages
1
2
3
4
5
6
7
8
9
10
Parent Categories (13)
Mechanics
Physical Science
Physical Sciences
Physical Sciences or Physics
Physics
Physics or Science
Science
Science and Engineering
Science and Physics
Science and Technology
Science Education
Science or Physics
Science/Physics