HARD
12th ICSE
IMPORTANT
Earn 100

Draw a circuit diagram for comparing two resistances using a metre bridge. Give the principle of the experiment. Why is the method suitable for two resistances of the same order of magnitude?

Important Questions on DC Circuits and Measurements

HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 11
With a circuit diagram, explain briefly how a metre-bridge can be used to find the resistance of a given wire. State the formula used.
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 12
Explain with diagram, the principle of a potentiometer. How can its sensitivity be increased? Why is it superior to a voltmeter?
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 13
Draw a labelled circuit diagram of a potentiometer to compare emfs of two cells. Write the working formula (Derivation not required).
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 14
Draw a neat labelled diagram of a simple potentiometer used to measure the emf of a cell and explain briefly its principle.    (ISC 2001)
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 15
Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell. Write the working formula. (Derivation not required).
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 1
Define emf of a cell and its terminal potential difference. Show that emf of cell is greater than terminal potential difference, when current is withdrawn and emf is lesser when cell is being charged.
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 2
Draw circuit diagram of a balanced Wheatstone bridge and obtain the relationship among the resistors used. Write its applications.
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 3
State Kirchhoffs laws for electric circuits and write the corresponding association of conservation of the quantities. Draw diagram in support of laws.