How much current does a flashlight use if its battery supplies 3.0 Volt and the bulb has a resistance of 4.0 Alpha
Well, since you've given me a resistance in "Alpha" units, I think it's safe to say that this flashlight might be using some very advanced technology!
But if we're talking about the conventional unit "Ohms" for resistance, and let's assume the bulb has a resistance of 4.0 Ohms, then we can use Ohm's Law to calculate the current.
First, we need to know the voltage and resistance. You mentioned the battery supplies 3.0 Volts, and the bulb has a resistance of 4.0 Ohms. So, using Ohm's Law (V = I * R), we can rearrange the formula to solve for current (I).
I = V / R
I = 3.0 V / 4.0 Ω
Calculating the value, we find that the current drawn by the flashlight would be 0.75 Amperes. Now, that's a bright idea! Just be careful not to blind anyone with that much brilliance.
To calculate the current, we can use Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R).
Given:
Voltage (V) = 3.0 Volt
Resistance (R) = 4.0 Alpha
Using Ohm's Law:
I = V / R
Substituting the given values:
I = 3.0 V / 4.0 Ω
Calculating the current:
I = 0.75 Amps
Therefore, the flashlight uses a current of 0.75 Amps.
To determine the current, you can use Ohm's Law, which states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R). In this case, you have the voltage supplied by the battery (V = 3.0 V) and the resistance of the bulb (R = 4.0 Ω).
The formula for Ohm's Law is:
I = V / R
Substituting the given values into the formula:
I = 3.0 V / 4.0 Ω
To calculate this, you can divide 3.0 by 4.0:
I = 0.75 A
Therefore, the flashlight will use a current of 0.75 Amperes.
Resistance is 4.0 Alpha...? I think you mean 4.0 Ohms (Ohm has symbol of capital letter of Omega, Ω). Alpha (α) is different, it is the temperature coefficient of resistance.
Anyway, you use the formula:
I = V/R
where
I = current (Ampere)
V = voltage (Volts)
R = resistance (Ohms)
hope this helps~ `u`