A: transformers work with either ac or dc electricity. true/false
b: power companies use hig...
A: transformers work with either ac or dc electricity. true/false
b: power companies use high voltages to reduce power loss over long transmission distances. true/false
c: a(n) uses electromagnetic induction to increase or decrease voltage.
d: materials that lose all electrical resistance at low temperatures are known as and are ideal for constructing powerful electromagnets.
e: an electric device that uses an electromagnet to open and close a switch is a(n)
Answers: 1
Physics, 22.06.2019 14:30, samone26
Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
Answers: 3
Physics, 22.06.2019 15:20, sandrinedionne7153
A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant
Answers: 3
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