Questions: Ohm's law is often written in the form I=E/R where I is the current in amperes (A), E is the voltage, and R is the resistance in ohms. What is the voltage necessary to push a 0.70 -A current through a resistance of 420 ohms? The voltage necessary to push a 0.70 -A current through a resistance of 420 ohms is volts.

Ohm's law is often written in the form I=E/R where I is the current in amperes (A), E is the voltage, and R is the resistance in ohms. What is the voltage necessary to push a 0.70 -A current through a resistance of 420 ohms? The voltage necessary to push a 0.70 -A current through a resistance of 420 ohms is volts.
Transcript text: Ohm's law is often written in the form $I=\frac{E}{R}$ where $I$ is the current in amperes (A), $E$ is the voltage, and $R$ is the resistance in ohms. What is the voltage necessary to push a 0.70 -A current through a resistance of 420 ohms? The voltage necessary to push a 0.70 -A current through a resistance of 420 ohms is $\square$ volts.
failed

Solution

failed
failed

Solution Steps

Step 1: Identify the given values

We are given the current \( I = 0.70 \) A and the resistance \( R = 420 \) ohms. We need to find the voltage \( E \).

Step 2: Use Ohm's Law

Ohm's Law is given by: \[ I = \frac{E}{R} \]

Step 3: Rearrange the formula to solve for voltage

Rearrange the formula to solve for \( E \): \[ E = I \times R \]

Step 4: Substitute the given values

Substitute \( I = 0.70 \) A and \( R = 420 \) ohms into the equation: \[ E = 0.70 \times 420 \]

Step 5: Calculate the voltage

Perform the multiplication: \[ E = 294 \]

Final Answer

The voltage necessary to push a 0.70-A current through a resistance of 420 ohms is \(\boxed{294}\) volts.

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 7% margin of error at a 90% confidence level, what size of sample is needed? Give your answer in whole people.
failedAnswered
An insurance company checks police records on 553 accidents selected at random and notes that teenagers were at the wheel in 96 of them. Complete parts a) through d). a) Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers. 95% CI=(%, %) (Round to one decimal place as needed.)
failedAnswered
In a survey, 21 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of 41 and standard deviation of 9. Find the margin of error at a 99% confidence level. Give your answer to two decimal places.
failedAnswered
Put the following inequality in interval notation: x>17 or x ≤-10
failedAnswered
The function h(x)=1/(x+8) can be expressed in the form f(g(x)), where g(x)=(x+8), and f(x) is defined as: f(x)=