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Why does a person fall when he jumps out from a moving train ?
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Why does a coin, placed on a card, drop into the tumbler when the card is rapidly flicked with a finger?
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Why does a ball thrown vertically upwards in a moving train , come back to the thrower's hand ?
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Explain the following :
When a train suddenly moves forward , the passenger standing in the compartment tends to fall backwards .
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Explain the following :
When a corridor train suddenly starts , the sliding doors of some compartments may open .
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Dust particles are removed from a carpet by beating it.
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Explain the following :
It is advantageous to run before taking a long jump .
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The property of inertia is more in :
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Name one D.C. source and one A.C. source.
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What transformation of energy takes place when current is drawn from a cell?
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Name the constituents of a cell.
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State the two kinds of cell. Give one example of each.
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State three differences between the primary and secondary cells.
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How much is the charge on an electron?
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n electrons flow through a cross section of a conductor in time t. If charge on an electron is e, then write an expression for the current in the conductor.
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Name the instrument used to control the current in an electric circuit.
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In the electric circuit shown in Figure, label the parts A, B, C, D, E, and F. State the function of each part. Show in the diagram the direction of flow of current.
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