I=V/R so I= 1.6/4 = 400mA with 1.2V across the load.
To understand the calculation, let's start with the formula you mentioned:
I = V / R
In this formula:
- I represents the current flowing through a circuit, measured in amperes (A).
- V represents the voltage across the circuit or load, measured in volts (V).
- R represents the resistance of the circuit or load, measured in ohms (Ω).
Now, let's break down the calculation that you provided:
I = 1.6 / 4 = 0.4 A
In this case:
- V is not given directly, but it can be assumed to be 1.2 V (as mentioned "1.2V across the load").
- R is given as 4 Ω.
So, substituting the values into the formula:
I = 1.2 V / 4 Ω = 0.3 A
Therefore, the current flowing through the circuit or load in this scenario is 0.3 A or 300 mA (milliamperes), not 400 mA as you mentioned.
It is important to note that when substituting values into equations, make sure the units are consistent. In this case, the voltage was given in volts and the resistance in ohms, resulting in current in amperes.