4 years ago

What’s the difference between AC and DC generators and how do they work? i need help asap thanks

1 answer:

3 0

Answer:In an AC generator the electrical current periodically reverses it direction,while in a DC generator the electrical current only flow in one direction

Explanation:in an AC generator the electrical current periodically reverses it direction,while in a DC generator the electrical current only flows in one direction.the major difference between an AC and DC generator is that an AC generator require a mechanism to produce DC output

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A 2.35 kg ball is attached to a ceiling by a3.53 m long string. The height of the room is5.03 m .The acceleration of gravity is

Studentka2010 [4]

Answer:-81.29 J

Explanation:

Given

mass of ball $m=2.35 kg$

Length of string $L=3.53 m$

height of Room $h=5.03 m$

Gravitational Potential Energy is given by

$P.E.=mgh$

where h=distance between datum and object

here Reference is ceiling

therefore $h=-3.53 m$

Potential Energy of ball w.r.t ceiling

$P.E.=2.35\times 9.8\times (-3.53)=-81.29 J$

i.e. 81.29 J of Energy is required to lift a ball of mass 2.35 kg to the ceiling

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sergey [27]

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