Electrical
medium
5 Questions
Question 1 of 5
According to Joule's Law, what is the formula for calculating the heat produced in a resistor?
Joule's Law explicitly states that Heat = I²Rt, where I is current, R is resistance, and t is time.
Question 2 of 5
What is the alternative formula for calculating heat produced, as per Joule's Law?
Joule's Law also gives Heat = VIt, where V is voltage, I is current, and t is time.
Question 3 of 5
Which type of material is used in heating elements to produce heat?
Heating elements are made of high-resistance materials like nichrome, which resist current flow, generating heat.
Question 4 of 5
Why do heating elements glow while heater cords do not?
Heating elements are made of high-resistance materials, causing them to glow. Heater cords are made of low-resistance materials and don't glow.
Question 5 of 5
What is the primary factor that contributes to the heating effect of current in a conductor?
The heating effect is caused by collisions between the flowing electrons and the atoms within the conductor.
1 / 5