Question

name: connor hardyper: 15.2 mastery check: ohms lawversion apass □revise □1. what does a resistor do?2. what are 2 ways to increase the current in a circuit?3. adrian plugs in his 4400 $omega$ electric shaver. if it pulls 0.05a of current, what is the voltage at the outlet?show your work.4. a 15 $omega$ toaster is plugged into a 120v wall outlet. what is the current running through the toaster (when it is on)?show your work.

Explanation:

1. A resistor controls electrical current flow in a circuit by providing electrical resistance, which limits current, divides voltage, or dissipates energy as heat.
2. Using Ohm's Law ($I=\frac{V}{R}$), current increases by either raising the circuit's voltage source or lowering the total electrical resistance in the circuit.
3. Rearrange Ohm's Law to solve for voltage, then substitute given values.
4. Rearrange Ohm's Law to solve for current, then substitute given values.

Step1: Recall Ohm's Law for voltage

$V = I \times R$

Step2: Substitute given values

$V = 0.05\,\text{A} \times 4400\,\Omega$

Step3: Calculate the voltage

$V = 220\,\text{V}$

Step1: Recall Ohm's Law for current

$I = \frac{V}{R}$

Step2: Substitute given values

$I = \frac{120\,\text{V}}{15\,\Omega}$

Step3: Calculate the current

$I = 8\,\text{A}$

Answer:

1. A resistor limits (or regulates) the flow of electrical current in a circuit, and can also divide voltage or dissipate excess electrical energy as heat.
2. 1. Increase the voltage supplied to the circuit.
3. Decrease the total electrical resistance in the circuit.

3.