Find the maximum current that can flow through the three resistors. Question 4: Why are the coils of electric toasters and electric irons made of an alloy rather than a pure metal? Chapter 3 - Metals and Non-Metals There are total 16 questions in the chapter. We all know that all there are situations where we have to face the exam which becomes necessary at the moment and we should have to give prior importance so that we can score enough marks. What is the Difference Between Guide and Reference Books for Class X? Remaining questions are of short answer type. So, it is important to give proper attention to these examples. The last chapter is about the conservation of natural resources.
Class 10 th is the first sharp turn in your academic journey. Remaining questions are of short and long answer type. If you find this article helpful then do share with your friend so that they also can get valuable information as well as good resources to read. In the eleventh question, we have to draw a labelled diagram of an electric motor. Answer: a It has high melting point and emits light at a high temperature.
It comprises a cell, ammeter, voltmeter, plug key, etc. Calculate the heat developed in 30 s. What change will occur in the current through it? Determine the power of the motor and the energy consumed in 2 h. The eighth chapter deals with reproduction activities in unicellular and multicellular organisms. We try to provide online math tutoring for you.
Question 10: How many 176 Ω resistors in parallel are required to carry 5 A on a 220 V line? It is not difficult to score full marks in a science exam if you know exactly how much to write. If the flow of current exceeds the specified preset value due to some reason, the heat produced melts it and disconnects the circuit or the device from the mains. Hence, when the length of wire is doubled, the resistance becomes double and current decreases to half. The best thing about e-books is that we can read pdf material from anywhere, anytime by making our self-comfortable which is the main highlight of e-book. In the thirteenth chapter, magnetic effects of electric current and its applications.
Remaining questions are of short and long answer type. You can learn all this and more here at Vedantu. First four questions are of objective type. In another circuit, another set of three bulbs of the same wattage are connected in parallel to the same source. You are not going to miss out any problems because the solutions include the latest editions of text-book that are used in 2018 to 2019 session.
The third chapter will take us to the world of metals and non-metals where we will learn about their properties and reactions among them. Answer: Question 14: Compare the power used in the 2 Ω resistor in each of the following circuits. Concepts are clarified in a step-by-step manner and answers and questions are simplified for ease of understanding. Question 17: An electric heater of resistance 8 f2 draws 15 A from the service mains 2 hours. A milliammeter had graduations marked 0, 100, 200, 300, 400 and 500. First three questions are of objective type. The current flowing through a resistor connected in an electric circuit and the potential difference applied across its ends are shown in figure alongside.
Visit Eduncle, for Complete information of Class 10th Board Exam. In the second chapter, we will learn about the various types of acids, bases and salts and their reactions with metals and non-metals. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances and what is the current flows through it? Answer: Parallel arrangement is used in domestic wiring because i Each appliance gets the same voltage as that of the mains supply. Chapter 9 - Heredity and Evolution There are total twelve questions. Answer: Advantages of connecting electrical devices in parallel: i When the appliances are connected in parallel with the battery, each appliance gets the same potential difference as that-of battery which is not possible in series connection. In the seventh question, we have to make diagram of to show how hypermetropia is corrected.
Answer: Question 7: The values of the current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below: Plot a graph between V and I and calculate the resistance of that resistor. If class 10 science subjects are driving you crazy and you are finding yourself unable to answer science problems, you have landed on the right page. The concepts in the books are explained very clearly. Page 202 Question 1: Name a device that helps to maintain a potential difference across a conductor. Which one of the following statements will be true for this circuit? Answer: Question 2: Redraw the circuit of the above question, putting in an ammeter to measure the current through the resistors and a voltmeter to measure the voltage across the 12 resistor.
Page 218 Question 1: Why does the cord of an electric heater not glow while the heating element does? Still have doubts or questions? Question 12: Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. Remaining questions are of short answer type. In question number four and five, we have to differentiate between the given two topics. Chapter 4 - Carbon and its Compounds There are fifteen questions in the chapter. Remaining questions are of short answer type. If you have any doubts, please comment below.