All Categories
Alerts
Wishlist
Cart
Sign In
Categories
Current Affairs & GK
Current Affairs
Show All Current Affairs & GK
General Aptitude
Arithmetic Aptitude
Data Interpretation
Show All General Aptitude
General Knowledge
Basic General Knowledge
General Science
Show All General Knowledge
Medical Science
Anatomy
Biochemical Engineering
Biochemistry
Biotechnology
Microbiology
Show All Medical Science
Technical
Database
Digital Electronics
Electronics
Networking
Show All Technical
Verbal and Reasoning
Logical Reasoning
Verbal Ability
Verbal Reasoning
Show All Verbal and Reasoning
›
If a 10Ω resistor is connected to a 20V battery, what is the power dissipated by
If a 10Ω resistor is connected to a 20V battery, what is the power dissipated by the resistor?
Expand All
Collapse All
Practice Questions
1 question
Q1
If a 10Ω resistor is connected to a 20V battery, what is the power dissipated by the resistor?
20W
40W
100W
200W
Show Solution
Copy
Power (P) can be calculated using P = V^2/R. Here, P = 20V^2 / 10Ω = 400 / 10 = 40W.
Questions & Step-by-step Solutions
1 item
Q
Q: If a 10Ω resistor is connected to a 20V battery, what is the power dissipated by the resistor?
Solution:
Power (P) can be calculated using P = V^2/R. Here, P = 20V^2 / 10Ω = 400 / 10 = 40W.
Steps: 6
Show Steps
Step 1: Identify the values given in the problem. We have a resistor of 10Ω and a battery of 20V.
Step 2: Write down the formula for power (P) in terms of voltage (V) and resistance (R). The formula is P = V^2 / R.
Step 3: Substitute the values into the formula. Here, V = 20V and R = 10Ω.
Step 4: Calculate V^2. This means 20V * 20V = 400V^2.
Step 5: Divide the result by the resistance. So, 400V^2 / 10Ω = 40W.
Step 6: Conclude that the power dissipated by the resistor is 40W.
Related Questions
W
What is the wavelength of a photon with a frequency of 6 x 10^14 Hz?
Question: What is the wavelength of a photon with a frequency of 6 x 10^14 Hz?Options: 5 x 10^-7 m3 ..
W
What is the derivative of f(x) = x^3 - 3x^2 + 4x - 5?
Question: What is the derivative of f(x) = x^3 - 3x^2 + 4x - 5?Options: 3x^2 - 6x + 43x^2 - 6x2x^2 -..
F
Find the value of tan(45°).
Question: Find the value of tan(45°).Options: 01undefined√3Correct Answer: 1Solution: tan(45°) = 1...
W
What is the value of 5C2?
Question: What is the value of 5C2?Options: 1020155Correct Answer: 10Solution: 5C2 = 5! / (2!(5-2)!)..
W
What is the total resistance in a circuit with a 12 ohm and a 4 ohm resistor con
Question: What is the total resistance in a circuit with a 12 ohm and a 4 ohm resistor connected in ..
‹
Biology (School & UG)
Chemistry (School & UG)
Civil Engineering
Commerce & Accountancy
Computer Science & IT
Current Affairs & GK
Data Structures & Algorithms
Electrical & Electronics Engineering
English (School)
General Aptitude
General Knowledge
General Knowledge & Current Affairs
Languages & Literature
Law & Legal Studies
Major Competitive Exams
Mathematics (School)
Mechanical Engineering
Medical Science
Physics (School & Undergraduate)
Quantitative Aptitude & Reasoning
Social Science (School)
Technical
Verbal and Reasoning
Vocational & Skill Development
›
Soulshift Feedback
×
On a scale of 0–10, how likely are you to recommend
The Soulshift Academy
?
0
1
2
3
4
5
6
7
8
9
10
Not likely
Very likely
✕
↑
