Ohm's Law states that voltage is directly proportional to the current (when the voltage goes higher, so the current) and is inversely proportional to resistance (if the resistance increases, the current decreases).
Formulas:
Voltage (E) or (V)
Unit: Volts (V)
V = I × R
Current (I)
Unit: Amperes (A)
I = V ÷ R
Resistance (R)
Unit: Ohms (omega sign)
R = V ÷ I
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bedrabarbara64
Yooo... apparently the omega sign is an "inappropriate word" so I can't put it in the answers but you can just search what it looks like.
bedrabarbara64
Oh! One thing, the unit for the answer in number one is ohms or the omega sign, I accidentally put a, which is for current
Answers & Comments
Answer:
1.)![R = ?\\R = \frac{V}{I} \\R = \frac{25}{25} \\R = 1A R = ?\\R = \frac{V}{I} \\R = \frac{25}{25} \\R = 1A](https://tex.z-dn.net/?f=R%20%3D%20%3F%5C%5CR%20%3D%20%5Cfrac%7BV%7D%7BI%7D%20%5C%5CR%20%3D%20%5Cfrac%7B25%7D%7B25%7D%20%5C%5CR%20%3D%201A)
2.)![I = \frac{V}{R}\\I = \frac{125}{72}\\I = 1.74 A I = \frac{V}{R}\\I = \frac{125}{72}\\I = 1.74 A](https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7BV%7D%7BR%7D%5C%5CI%20%3D%20%5Cfrac%7B125%7D%7B72%7D%5C%5CI%20%3D%201.74%20A)
3.)![V = (I)(R)\\V = (9)(72)\\V = 648V V = (I)(R)\\V = (9)(72)\\V = 648V](https://tex.z-dn.net/?f=V%20%3D%20%28I%29%28R%29%5C%5CV%20%3D%20%289%29%2872%29%5C%5CV%20%3D%20648V)
Explanation:
Ohm's Law states that voltage is directly proportional to the current (when the voltage goes higher, so the current) and is inversely proportional to resistance (if the resistance increases, the current decreases).
Formulas:
Voltage (E) or (V)
Unit: Volts (V)
V = I × R
Current (I)
Unit: Amperes (A)
I = V ÷ R
Resistance (R)
Unit: Ohms (omega sign)
R = V ÷ I