Question

1. according to ohms law, voltage = ____________ × __________. 12. if a 1.5 - v battery is connected in a simple circuit to a lightbulb with a resistance of 8 ohms, the amount of current flowing through the circuit is __________. 13. in a series circuit, each device that is added to the circuit decreases the __________. 14. if you multiply the voltage in a circuit by the current, you are finding the __________ of the circuit. 15. electric energy usage on your electric bill is measured in ____________. directions: answer the following questions on the lines provided. 16. how are series and parallel circuits similar? how are they different?

Explanation:

Step1: Recall Ohm's law formula

Ohm's law is $I=\frac{V}{R}$, where $I$ is current, $V$ is voltage and $R$ is resistance.

Step2: Identify given values

We are given $V = 1.5$ V and $R=8$ ohms.

Step3: Calculate current

Substitute values into the formula: $I=\frac{1.5}{8}= 0.1875$ A.

For question 14, power $P$ in an electrical - circuit is given by $P = VI$, so when you multiply voltage by current, you are finding the power of the circuit.

For question 15, electric energy usage on an electric bill is measured in kilowatt - hours (kWh).

For question 16:

Similarities

Both series and parallel circuits are closed - loop electrical circuits that allow electric current to flow. They both contain electrical components such as resistors, batteries, etc.

Differences

In a series circuit, the components are connected end - to - end so there is only one path for the current to flow. The current through each component is the same, and the total resistance is the sum of the individual resistances ($R_{total}=R_1 + R_2+\cdots$). In a parallel circuit, the components are connected across common points, so there are multiple paths for the current to flow. The voltage across each component is the same, and the reciprocal of the total resistance is the sum of the reciprocals of the individual resistances ($\frac{1}{R_{total}}=\frac{1}{R_1}+\frac{1}{R_2}+\cdots$).

Answer:

1. $0.1875$ A
2. power
3. kilowatt - hours (kWh)
4. Similarities: Both are closed - loop circuits with electrical components. Differences: Series has one current path, components in parallel have multiple paths; in series current is same through components and total resistance is sum of individual resistances, in parallel voltage is same across components and reciprocal of total resistance is sum of reciprocals of individual resistances.