Which of the following describes electric current?
2 answers:
Answer:
Electric current is the flow of a charge
Explanation:
Electric current is defined as the flow of electric charges. Mathematically, it is given by :
Where
q = electric charge
t = time interval
The SI unit of electric current is ampere. It is denoted by letter A. According to Ohm's law, electric current can be given by voltage divided by resistance of the circuit. Hence, the correct option is (c) " Electric current is the flow of a charge ".
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Answer:
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Answer:
Explanation:
Total mechanical energy = 1/2 m ω²A² where ω is angular frequency and A is amplitude .
Given
1/2 m ω²A² = 5.46
ω²A² = 2 x 5.6 / m
= 2 x 5.6 / .325
= 34.46
ωA = 5.87
maximum speed = ωA = 5.87 m /s
B )
angular frequency = 2π / T , T is period of oscillation .
= 2 x 3.14 / .22
= 28.54 s⁻¹
ω =
k is force constant and m is mass
k = 264.72 N/m
C)
ωA = 5.87
28.54 X A = 5.87
A = .2056 m
= 20.56 cm .