State Joule's law of heating.

Important Questions on Thermal And Chemical Effects of Electric Current

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 2

State Faraday's law of electrolysis.

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 3

Which will have more resistance, a lamp of $60 \mathrm{W}$ or a lamp of $100 \mathrm{W}$? Why?

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 4

Mention the physical significance of Faraday constant.

HARD

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 5

Show that the maximum power furnished by a cell to a resistor $R=\frac{{\epsilon }^2}{4R}$ where $\epsilon$ stands for the emf of the cell. 

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 6

Find the resistance (in $\mathrm{k\Omega }$) of a $25 \mathrm{W}$, $250 \mathrm{V}$ bulb.

EASY

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 7

How does a voltmeter differ from a voltmeter?

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 8

Can alternating current (a.c.) be used in electrolysis? Explain your answer.

MEDIUM

12th Odisha Board

IMPORTANT

Bureau's Higher Secondary Physics Class 12>Chapter 7 - Thermal And Chemical Effects of Electric Current>MODEL QUESTIONS>Q 9

Distinguish between chemical equivalent and electrochemical equivalent of a substance.