Test Details

Current Electricity

Objective questions

Oct 19, 9:00 PM

40 minutes

Oct 19, 9:40 PM

25.0 marks

MCQ

25 questions

Dharmendra prasad

Given your background, you could offer Prasad Master Classes focusing on preparing students for JEE Mains and NEET examinations. Here's how you might structure your classes: Curriculum Design: Comprehensive coverage of Class 11 and 12 Physics syllabus. Emphasis on topics frequently tested in JEE Mains and NEET. Teaching Methodology: Conceptual understanding with real-life examples. Problem-solving techniques and shortcuts. Regular quizzes and mock tests to track progress. Resource Material:

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Question Text

Question 1 :
A cell supplies a current of $$1A$$ through a resistance of $$5\Omega$$ and a current of $$0.6A$$ through a resistance of $$10\Omega$$. What is the internal resistance of the cell?

Question 2 :
The amount of work done by the cell on a unit positive charge carrier to force it to go to the point of higher potential is called

Question 4 :
By increasing the temperature, the specific resistance of a conductor and a semiconductor

Question 6 :
The potential gradients on the potentiometer wire are$$V_{1}$$ and $$V_{2}$$ with an ideal cell and a real cell of same emf in the primary circuit then

Question 9 :
Electric power is transmitted over long distance through conducting wires of very high voltage, because.

Question 10 :
Rate at which electric work is done is called as ?

Question 11 :
The equivalent resistance of several resistors in series is equal to the:

Question 12 :
(A) The potential difference across battery may be equal to its emf (B) The potential differences across battery may be greater than its emf (C) The potential difference across battery may be less than its emf Out of the above statements which is/are correct

Question 13 :
A potentiometer has a driving cell of negligible internal resistance. The balancing length of a Daniel cell is 5 m. If the driving cell had internal resistance, the balancing length of the same Daniel cell would have been

Question 14 :
Two cells when connected in series are balanced on $$8\ m$$ on a potentiometer. If the cells are connected with polarities of one of the cell is reversed, then they balance on $$2\ m$$. The ratio of emf's of two cells is

Question 16 :
A given resistor has the following colour scheme of the various strips on it : Brown, black, green and silver. Its value in ohm is :

Question 17 :
In general, when the temperature of a conductor increases, its resistance

Question 18 :
What is the series equivalent of 1000 $$\Omega$$ resistor and 2700 $$\Omega$$  resistor in series?

Question 19 :
If n resistance (each R) are connected in parallel then the resultant will be

Question 20 :
In our houses all electrical devices operate on 220 V. It implies that

Question 21 :
Three equal resistors connected in series across a source of e.m.f dissipate 10 watts of power. What will be the power dissipated in watts if the same resistors are connected in parallel across the same source of e.m.f?

Question 22 :
The resistance of a wire at room temperature $$30^o C$$ is found to be $$10 \Omega $$. Now to increase the resistance by 10%, the temperature of the wire must be [The temperature coefficient of resistance of the material of the wire is $$0.002 \,per\, ^oC$$].

Question 23 :
If three resistors 2 ohm, 3 ohm and 4 ohm are connected in series, then effective resistance in a circuit will be _______ ohm.

Question 24 :
If the length of a material changes 4 times and area changes 2 times. Then the resistivity of the material will be changing

Question 25 :
The electrical resistivity of a conducting wire is K. If its length and area of cross-section are doubled then the new resistivity of the wire will be :

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