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Is it true that The strength of an electromagnet is easy to control?
Wiki User
∙ 12y ago
yes it is easily controlled.
Wiki User
∙ 12y ago
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What are some true statements for magnets and their poles?
The earth is an electromagnet. It has a north pole and a south pole. Apex: A magnet always has two poles, earth is a elecrtomagnet
Lignite is easy to mine but causes heavy air pollution?
true
Can Electromagnets be turned on and off true or false?
An Electromagnet. Take a screwdriver, and a put 50 turns of wire round the screwdriver. Now connect one wire to positive and one wire to negative of a battery and try to pick up some paperclips.
Ocean currents affect the climate true or false?
yes
Earth is closest to the sun during the month of January true or false?
true
True or false an electromagnet must include a coil of wire?
A magnetic field is induced by pushing current though a wire; so you could consider a straight wire an electromagnet. Using more coils will strenghten the electromagnet, though, so a straight wire version will be very weak comparitively.
True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?
F=N*I so directly proportional
A stereo speakers uses an electromagnet to move the cone?
True .
True or false The device that turns a needle in a galvanometer is called an electromagnet.?
true
Neutral posture is the optimal position of each joint to provide the highest strength speed and control?
true
Is An electromagnet is a solenoid with a piece of ferromagnetic material within it?
True
The device that turns a needle in a galvanometer is called an electromagnet?
True.
What would happen if you placed a compass near an electromagnet?
You would not get a true reading any longer. The forces of the electromagnet are greater than the natural magnetism of the Earth.
Physical strength tends to decline in old age true or false?
It is true that physical strength tends to decline in old age.
True or false An oligarchy is a government controlled by a small group of people who receive their power from wealth social position or military strength.?
Almost: an oligarchy is a type of government controlled by a small group of very wealthy individuals who control the political process. Control of a government by military means is called a military dictatorship, while control of a government due to social position is now obsolete (think of the French nobles in the late1700's).
How is the strength of dispersion forces related to the number of electrons in a molecule?
strength = molar mass = number of electrons
Which of the following statement about electromagnets is true?
Electromagnets are temporary magnets that are created when electric current flows through a wire coil. The strength of an electromagnet can be increased by increasing the number of turns in the wire coil, increasing the current flowing through the coil, or by using a ferromagnetic core material.
