Test Details

Chap-3

Test

Oct 24, 6:00 PM

60 minutes

Oct 24, 7:00 PM

30.0 marks

MCQ

30 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 60 watt bulb carries a current of 5A . Find the total charge passing through it in 1 hour.

Question 4 :
State whether given statement is True or False The wire of potentiometer is made up of Aluminium.

Question 5 :
The sensitivity of a potentiometer can be increased by a) increasing the series resistance in the primary circuit b) decreasing the length of the potentiometer wire c) using a thin and high resistivity wire as a potentiometer wire d) increasing the length of the wire

Question 6 :
A student while performing an experiment was surprised to find that when two identical cells are either connected in series or in parallel across a $$2\Omega$$ resistor, the same current passes through the resistor. What is the internal resistance of each cell?

Question 7 :
A storage cell is charged by $$5$$ amp d.c. for $$18$$ hours.Its strength after charging will be

Question 8 :
Two wire of same dimension but resistivities $${\rho _1}$$ and $${p_2}$$ are connected in series. The equivalent resistivity of the combination is:

Question 9 :
Electrical power P is given by expression : $$V\times x$$. What is $$x$$?

Question 10 :
Match  List - I                        List - II a) Charging cell              e) $$V=0$$ b) Discharging cell         f) $$V = E$$ c) Cell short circuited     g) $$V<E$$ d) Cell in open circuit     h) $$V>E$$

Question 11 :
Consider the following statements A and B and identify the correct answer A : Thermistors can have only -ve temperature coefficient of resistors. B : Thermistors with -ve temperature coefficients of resistance are used as resistance thermometers to measure low temperature of the order of 10K

Question 12 :
Identify the changes in a circuit on adding a light bulb in parallel to the actual resistance of the circuit. It will:

Question 13 :
An electrical device operate at 12 A current and 120 V D.C . If it is connected with 250 V and 30 Hz AC. then power consumption:

Question 15 :
Assertion (A) :Parallel connection of cells is preferred to draw more current at low potential difference. . Reason (R) :In parallel connection, current i$$=\frac{ne}{r}$$ if r>> R.

Question 16 :
With the increase in temperature, the ratio of conductivity to resistivity of a metal conductor:

Question 17 :
Which physical quantity cannot be determined with the help of potentiometer?

Question 20 :
When n number identical cell of emf E and internal resistanceis connected in parallel, the net emf of the system will be

Question 22 :
For a metallic wire, the ratio $$\displaystyle \frac{V}{i}$$ (where, V = applied potential difference and i = current flowing)

Question 24 :
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 25 :
A circuit is made from two resistors in series and a battery. As more resistors are added in series, how is the current coming out of the battery affected?

Question 28 :
State whether True or False It is possible that a battery has some constant value of emf but the potential difference between the plates is zero.

Question 29 :
Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?

Question 30 :
Find the effective resistance when$$\displaystyle 1\Omega ,2\Omega$$ and$$\displaystyle 3\Omega$$ resistances are connected in series

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