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Edugain HOTS Questions with Answer CBSE Chapter Magnetic Effects of Electric Currents

HOTS Questions with Answer:   Magnetic Effects of Electric Currents Q1.On what factors does the magnetic field intensity at the centre of the circular coil carrying current  depend ? Answer: The magnetic field intensity at the centre of the circular coil is directly proportional to current and inversely proportional to radius of the coil. So, in both the cases ,that is, twice the current as well as half in radius, the magnetic field intensity gets doubled. The magnitude of the magnetic field (B) at the of the coil is: (i). directly proportional to the current (I) flowing it.       i.e.   B α I                           ① (ii). Inversely proportional to the radius (r) of the coil     i.e.  B α  1/r                               ② From ①, and  ② , we get               B α I/r Q2.State the principle used to determine the force experienced by a conductor carrying current in uniform magnetic field ? Answer: .Fleming’s Left Hand Rule-Stretch the first three fingers

Control and Coordination Study Material for class 10

10th Control and coordination The organ system in an animal that serves to coordinate and control the functioning  of all other organ systems in the body is known as nervous system. Nervous system works with the endocrine system to communicate, integrate and coordinate the functions of various organs and systems in our body and helps the body to respond to the external stimuli.  In humans, the nervous system has two main divisions: • The central nervous system (CNS) • The peripheral nervous system (PNS) The central nervous system consists of brain and spinal cord. It is regarded as the ‘thinker’ or ‘information processor’ in the body. The peripheral nervous system includes the sensory and motor nerves and connects the central nervous system with the sense organs, muscles and glands of the body. The peripheral nervous system is regarded as ‘actor’ or ‘performer’ in the body. Nerve cell or neuron A neuron is the basic unit of nervous tissue. Our nervous

SOLVED CBSE TREND SETTER QUESTIONS CLASS - X (Acid Base and Salt)

Question:  How does baking powder differ from baking soda? Answer:  Baking soda is a single compound which has sodium hydrogen carbonate which is  alkaline (basic) in nature Baking powder  is a mixture of sodium hydrogencarbonate and a mild edible(eatable) acid such as tartaric acid. When baking powder mixes with water, then the sodium hydrogencarbonate reacts with tartaric acid to evolve carbon dioxide gas which gets trapped in the wet dough and bubbles out slowly making the cake to rise and hence 'soft and spongy'.The equation which takes place can be shown as: NaHCO 3  + H +   ----> Na +  +  CO 2  + H 2 O Question:  What will happen if heating is not controlled while preparing Plaster of Paris from gypsum? Answer:  It may be noted that the temperature should be controlled carefully. It should not be allowed to rise above 152°C (425K) because, if whole of the water is lost then anhydrous calcium sulphate is produced, which is called dead burnt plaster and it

Ch. 7 - Control and Coordination class 10 Trendsetter solved CBSE Test paper-02

Class 10 Trendsetter solved CBSE Test paper-02 1. What is a neuron? (1 mark) Ans: Neuron is the structural &functional unit of nervous system. 2. Give an example of plant hormone that promotes growth. (1 mark) Ans: auxins, gibberellins and cytokinins 3. What part of the brain maintains posture and equilibrium of the body? (1 mark) Ans: Cerebellum controls coordination and adjustment of movements (equilibrium) and posture 4. Which parts of the body produce growth regulators? (1 mark) Ans: Pituitary Gland 5.What is synapse ? Ans: The junction between neurons is called synapse. 5. List two functions performed by ovaries in a human female. (1 mark) Ans: (a) Produces ova or egg. (b) Hormones Oestrogen and Progesterone. 6. What does a stem (or shoot) do in a response to light? (1 mark) Ans: The stem is positively phototropic (grown towards light) 7. Name the 2 hormones secreted by pancreas. Write one function of each hormone. (2 marks) Ans: (i) Insulin