EASY
12th West Bengal Board
IMPORTANT
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How much charge flows through a 250 V,1000 W heater in one minute?

Important Questions on Thermal Effect and Chemical Effect of Current

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 14
What is largest voltage you can safely put across 98 Ω, 0.5 W resistor?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 15
What is the difference between heating wire and fuse wire?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 16

A toaster produces more heat than a light bulb when connected in parallel to the 220 V mains. Which of the two has greater resistance?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 17
Three bulbs of specifications 6 W/220 V,100 W/220 V, 1000 W/220 V are connected in series. Which one will glow the brightest?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 18
State and prove the principle of least heat or the minimum heating effect of current.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 19
What is Seebeck effect?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 20

What is the value of Seebeck coefficient at neutral temperature of a thermocouple?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 6 - Thermal Effect and Chemical Effect of Current>EXERCISE 6>Q 21
How thermo-emf of a thermocouple varies with temperature of the hot junction?