Question

write proper words from the following group of words in the blanks

Answer 1

a. Water in the waterfall flows from a higher level to the lower level because of gravitational difference.

• The water at height has more potential energy then kinetic energy. When it falls due to gravitational difference, the potential energy keeps on decreasing and kinetic energy keeps on increasing.

b. In an electric circuit, electrons flow from a region of lower potential to a region of higher potential.

• Electrons flow in the opposite direction as to which the current flows. The current flows from a region of higher potential to a region of lower potential therefore, electrons flow from lower to higher potential.

c. The difference between the electromagnetic potential of the positive and the negative end of an electric cell is the potential difference of the cell.

• Negatively charged particles flows through the cell such that to switch the terminals.

d. Three electric cells of potential difference 1.5V each have been connected as a battery. The potential difference of the battery will be 4.5V.

• The overall potential difference is calculated by addition of individual potential difference. Hence 1.5V + 1.5V + 1.5V = 4.5V.

e. An electric current flowing in a wire creates magnetism around the wire.

• The flowing current shows magnetic properties as it creates a magnetism by creating a magnetic field around the wire through which it is flowing.

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