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In order to produce a current there must be a change of the magnetic field. True or False?
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Is an isochron a change in earth's magnetic field?
no false
Electric fields and magnetic fields are both present near a wire carrying current?
False, electric fields and magnetic fields do not often occur together.
When a wire with a current is placed in a magnetic field electrical energy is transformed into mechanical energy true or false?
True
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
Is you true the magnetic field around an electromagnet can be made stronger by increasing current or decreasing the number of coils around the iron core?
No, you is false. Increasing current does it, but the number of turns in the coilalso must increase if you want to increase the magnetic field that way.
Is an isochron a change in earth's magnetic field?
no false
Electric fields and magnetic fields are both present near a wire carrying current?
False, electric fields and magnetic fields do not often occur together.
When a wire with a current is placed in a magnetic field electrical energy is transformed into mechanical energy true or false?
True
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
Is you true the magnetic field around an electromagnet can be made stronger by increasing current or decreasing the number of coils around the iron core?
No, you is false. Increasing current does it, but the number of turns in the coilalso must increase if you want to increase the magnetic field that way.
True or False The Earth's North Magnetic Pole is in the same place as the North Pole?
False. The Earth's magnetic fields are constantly shifting, and have been at widely different points over the Earth's history. The North Pole (geographic) is defined by the Earth's spin, and does not appreciably change over millions of years.
Is negative feedback is a self-amplifying chain of events that tend to produce rapid change in the body?
No, false.
An electric motor converts electrical energy to potential energy True or false?
It is false that an electric motor converts electrical energy to potential energy.
True or false current is set too low or too high you should change the settings during welding?
I was always told not to so I say false.
Ovaries do not produce testosterone true or false?
False
True or false you produce tears all the time?
False
A confer produce seeds in a fruit true or false?
false
