Physics help!!(multiple choice- wave and electro magnetic) I need to solve this! T.T?
March 18th, 2010Q1. The galvanometer is
a. a machine that measures galvas.
b. a meter that galvanizes a coil inside it.
c. a spring force that increases or reduces
d. a coil attached to a battery with a dial
e. none of these options
Q2. Light waves are
a. oscillations of electro magnetic fields
b. mechanical vibrations
c. Huygens' waves spreading in the luminiferous aether
d. all of these options
e. none of these options
Q3. The electromagnet is
a. a coil of wire with a current is running through the wire.
b. a magnet that is plugged into and electric outlet.
c. a current that can be turned off or on by a magnet
d. a coil with a magnet moving through it.
e. none of these options
A galvanometer is a type of ammeter, that's none of the above.
Light waves are a form of electromagnetic radiation, which sounds close to A, but I still think is incorrect.
An electromagnet is a magnet that only creates a magnetic field when a current is applied to it.
2 a
3 a
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