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- Chemical Reactions & Equations
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- Metals & Non Metals
- Carbon & Its Compounds
- Periodic Classification of Elements
- Life Processes
- Respiration
- Control and Coordination
- How Do Organism Reproduce
- Heredity and Evolution
- Light: Reflection and Refraction
- Human Eye and Colorful World
- Electricity
- Magnetic Effect of Electric Current
- Sources of Energy
- Our Environment
- Management of Natural Resources
Popular Questions
- An electric motor takes 5A from a 220 V line.
- Name a device that helps to maintain a potential difference across a conductor.
- Define the unit of electric current.
- A copper wire has diameter 0.5mm
- The values of current / flowing in a given resistor for the corresponding
- Which of the following terms does not represent electric power in a circuit?
- Why are coils of electric toasters and electric irons made of alloy rather than a pure metal?
- How much energy is given to each coulomb of charge passing through a 6 V battery?
- Why does the cord of an electric heater not glow while heating element does
- What does an electric circuit mean?
- On what factors does the resistance of a conductor depend?
- What determines the rate at which energy is delivered by a current?
- Explain the following questions
- What is meant by saying that the potential difference between two points is 1 V?
- A hot plate of an electric oven connected to a 220V line
- Compare the power used in
- An electric iron of resistance 20
- An electric heater of resistance 8
- How many 176
- Several electric bulb designed to be used on a 220V
- Show how would you connect three resistors
- Which uses more energy
- How can three resistors of resistance 2
- Draw a schematic diagram of a circuit consisting of a battery of
- How is volmeter connected in circuit to
- Let the resistance of an electrical component remains constant while the potential difference
- An electric lamp of 100
- Two lamps, one rated at 100 W-220 V and other 60 W-220 V
- A battery of 9V is connected in series with resistors
- Redraw the above circuit, putting in an ammeter to measure the current through the resistors
- A piece of wire of resistance R is cut into five equal parts
- When a 12V battery is connected across an unknown resistor
- Judge the equivalent resistance when the following are connected in parallel
- An electric bulb is rated 220V and 100W
- Compute the heat generated while trasferring 96000 C of charge in one hour
- Two conducting wires of same material and of
- Will Current flow more easily through a thick wire or thin wire
- What is (i) the highest and (ii) the lowest total resistance which can be secured by
- What are the advantages of connecting electrical appliances
