A 5.0 ohm resistor, a 15.0 ohm resistor and a unmarked resistor are connected as shown with a 15 volt source. The ammeter reads a current of .50 ampere. a) calculate the reading of the the voltmeter across the 5.0 ohm resistor
To calculate the reading of the voltmeter across the 5.0 ohm resistor, we can use Ohm's law formula:
V = I * R
Where:
V is the voltage across the resistor,
I is the current flowing through the resistor, and
R is the resistance of the resistor.
In this case, the current flowing through the circuit is 0.50 Amps and the resistance of the 5.0 ohm resistor is known. So, we can calculate the voltage across the 5.0 ohm resistor using the formula.
V = (0.50 A) * (5.0 Ω)
V = 2.5 Volts
Therefore, the reading of the voltmeter across the 5.0 ohm resistor would be 2.5 Volts.