Answer:
The current is 0.5 amperes.
Explanation:
Electrical Circuit
An electrical circuit is defines as a line or a path where an electrical current flows.
When the circuit is closed, both of its ends meet and making it a loop. Electrical current flows within a closed circuit.
Another variety of a circuit is an open circuit. Here, the electron flow is cut short due to its broken path. Electrical current does not flow in an open circuit.
Factors Affecting Electrical Circuit
- Source
- Current
- Resistance
- Voltage
For this problem, we are going to use the Ohm's Law. The mathematical expression for Ohm's Law is
- V = IR where
- V is the voltage (unit is volts)
- I is the current (unit is amperes)
- R is the resistance (unit is ohms or Ω)
Rearranging this to get the current, we have
I = V/R
Solving:
- V = 120 V
- R = 240 Ω
- I = V/R
- I = 120 V / 240 Ω
- I = 0.5 amperes
Therefore, the current in the light bulb when placed in a 120 V circuit is 0.5 amperes.
Learn more about Ohm's Law here:
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