The electrolyte is a wet pulp of zinc chloride (ZnCl 2) and ammonium chloride (NH 4Cl). The electrolyte contains negatively charged and positively charged ions. An electrolyte is filled between these two layers. This is the negative terminal of the cell. Inside you will find a whitish, metal layer. Take a lead dry cell and remove its outer coating. Describe the construction, working and usefulness of a dry cell, with the help of a diagram.ĭescribe the construction, working and usefulness of a dry cell, with the help of a diagram. ∴ Total potential difference = 2V + 2V + 2V + 2Vĥ. In (ii), four cells are connected in series. ∴ Total potential difference = 2V + 2V + 2V = 6V. [Note: In (i), three cells are connected in series. What will be the total potential difference of the battery in both cases? What will be the total potential difference of the battery in both cases?Įlectric cells having potential difference 2V each have been connected in the form of a battery. Electric cells having potential difference 2V each have been connected in the form of a battery. If they are connected in a wrong way as shown above, the total potential difference will be 2V + (-2V) = zero.Ĥ. Check whether the cells are connected in a proper manner: If you can see the filament of the bulb, check whether it is intact or broken. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing? In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. Show how you will connect the wires by drawing a diagram.ģ. Show how you will connect the wires by drawing a diagram.Ī battery is to be formed by joining 3 dry cells with connecting wires. A battery is to be formed by joining 3 dry cells with connecting wires. The potential difference of the battery will be 4.5 V.Īn electric current flowing in a wire creates ………………… around the wire.Īn electric current flowing in a wire creates magnetism around the wire.Ģ. Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential difference of the battery will be ……………… V.
The difference between the electrostatic potential of the positive end and the negative end of an electric cell is the potential difference of the cell.
The difference between the electrostatic potential of the positive end and the negative end of an electric cell is the …………. In an electric circuit, electrons flow from a point of lower potential to the point of higher potential. In an electric circuit, electrons flow from a point of potential to the point of ………. Water in the waterfall flows from a higher level to the lower level because of gravitational attraction. Water in the waterfall flows from a higher level to the lower level because of ……………. (magnetism, 4.5V, 3.0V, gravitational attraction, potential difference, potential, higher, lower, 0V) Write proper words from the following group of words in the blanks and rewrite the completed sentences: Maharashtra State Board Class 8 Science Solutions Chapter 4 Current Electricity and MagnetismĬlass 8 Science Chapter 4 Current Electricity and Magnetism Textbook Questions and Answersġ.
Balbharti Maharashtra State Board Class 8 Science Solutions Chapter 4 Current Electricity and Magnetism Notes, Textbook Exercise Important Questions and Answers.
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