A resistor whose value \( R = 10 \Omega \) is connected to a 10-volt battery. What will be the power \( P \) and the amount of heat \( H \) generated in one minute?
\( P = 10 \) W, \( H = 600 \) J
To solve this problem, we need to determine the power \( P \) consumed by a resistor and the heat \( H \) generated in one minute.
The given values are:
Step 1: Calculate the Power \( P \)
The formula for power \( P \) using Ohm’s Law is:
\[ P = \frac{V^2}{R} \]
Substituting the given values:
\[ P = \frac{10^2}{10} = \frac{100}{10} = 10 \text{ W} \]
Step 2: Calculate the Heat \( H \) Generated in One Minute
Heat generated \( H \) is given by:
\[ H = P \times t \]
Where time \( t = 60 \) seconds (since 1 minute = 60 seconds).
Substituting the values:
\[ H = 10 \times 60 = 600 \text{ J} \]
Conclusion: The power and heat generated are \( P = 10 \) W and \( H = 600 \) J, respectively.
What is the colour of the light emitted by the Sun?
Lightning occur in the sky when two clouds:
With reference to street-lighting, how do sodium lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.
Select the correct answer using the code given below.
Which one of the following is a reason why astronomical distances are measured in light-years?
In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the code given below.