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AlladinOne [14]
3 years ago
7

What is the current in a 60.0 Ï resistor when the potential difference across it is 120.0 v?

Physics
1 answer:
nlexa [21]3 years ago
6 0
The ohms law states that  he potential difference of a current carrying conductor is proportional to the current and the resistance is constant.
therefore; mathematically; V = IR where V is the voltage , I is the current and R is the resistance in the conductor.
Making I the subject we get I=V/R
Therefore to get current we divide voltage by the resistance
 I = 120 ÷ 60 = 2 Ampheres
Therefore the current is 2 Ampheres
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\sqrt(9.8 x 1) = 3.13 m/s

\sqrt(gh) = sqrt(hg)so [tex]4×V_d= \sqrt(4/3hg)V_h=\sqrt(hg)

The disc is the fastest.

While i'm on this subject i'll show you this:

Solid ball =0.7v^2= gh

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hoop =v^2=gh

The above is simplified from linear KE + rotational KE, the radius or mass makes no difference to the above formula.

The solid ball will be the faster of the 3, like above i'll show you.

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\sqrt((9.8 x 1)/0.7) = 3.741 m/s

solid disk speed =\sqrt((gh)/0.75)

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