Class 12 ISC DC Circuit & Measurement Boards Questions
Here we provide Class 12 physics important notes,board questions and predicted questions with Answers for chapter DC Circuit & Measurement. These important notes,board questions and predicted questions are based on ISC board curriculum and correspond to the most recent Class 12 physics syllabus. By practising these Class 12 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 12 Board examinations.
Class 12 ISC DC Circuit & Measurement Boards Questions
DC Circuit & Measurement Boards Questions
Q1
In figure given below find the value of resistance x for which points A and B are at the same
potential :
solutions
solutions
Q2
In the circuit shown in figure below E1 and E2 are 2 cells having emfs 2V and
3V respectively, and negligible internal resistances. Applying Kirchoff’s laws of electrical
networks , find the value of current I1 and I2 .
solutions
solutions
Q3
Draw a labelled circuit diagram of a potentiometer to measure internal resistance of a cell. Write
the working formula [Derivation not required].
solutions
solutions
Q4
On which conservation principle is kirchhoff’s second law of electrical networks based?
solutions
solutions
Q5
In a metre bridge circuit com resistance in the left hand gap is 2 Ω and an unknown resistance X is
in the right hand gap as shown in figure below. The null point is found to be 40 cm from the left
end of the wire. What resistance should be connected to X so that the new null point is 50 cm from
the left end of the wire?
solutions
solutions
Q6
In a potentiometer experiment, balancing length is found to be 120 cm for a cell E1 of
emf 2V. What will be the balancing length for another cell E2 of emf 1.5 V? (No other
changes are made in the experiment)
solutions
solutions
Q7
ε1 , ε2 are battery is having emf of 34 V and 10 V respectively and internal
resistance of 1 Ω and 2 Ω respectively. They are connected as shown in figure below. Using
kirchhoff’s laws of electrical networks calculate the current I1 and I2
solutions
solutions
Q8
In a potentiometer experiment, the balancing length with the resistance of 2Ω is found to be 100 cm,
while that of an unknown resistance is 500 cm. Calculate the value of the unknown resistance.
solutions
solutions
Q9
Draw label circuit diagram of a potentiometer to measure the internal resistance ‘r’ of a cell.
Write the working formula. (derivation is not required)
solutions
solutions
Reach Us
SERVICES
- ACADEMIC
- ON-LINE PREPARATION
- FOUNDATION & CRASH COURSES
CONTACT
B-54, Krishna Bhawan, Parag Narain Road,
Near Butler Palace Colony Lucknow
Contact:+918081967119
Add a comment