MEDIUM
12th ICSE
IMPORTANT
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A resistor R is connected to a cell of emf E and internal resistance r. Potential difference across resistor R is found to be V. State the relation between E, V, R and r

Important Questions on DC Circuits and Measurements

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 2
A constant-voltage supply is sending a constant current in a resistor. What is being dissipated in the circuit?
MEDIUM
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 3
Is internal resistance a drawback of the cell? Does it remain constant?
HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 4

Find the emf of the battery shown in figure.

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HARD
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 4

Calculate the net emf across A and B shown in figure below :

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EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 5
Name the two conservation laws implied in Kirchhoff s law for electric circuits.
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 6
Which conservation principle is involved in Kirchhoff s first law of electric circuits?
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 7
On which conservation principle is Kirchhoff's second law of electrical networks based?
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 6 - DC Circuits and Measurements>QUESTIONS>Q 8

V-I graphs for series and parallel combinations of two metallic resistors are given. Which one represents parallel combination? Why?

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