Electric Cell

Q.

Question 14

When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, camera and inverters), they are used again and again. How?

Q.

When two or more cells are joined together, they form a ___.

1. battery

2. electric circuit

3. electrochemical cell

4. electric bulb

Q.

Calculate the number of 1.5 V cells required to make a 12 V battery.

1. 8

2. 12

3. 4

4. 6

Q. Which of the following is the symbol of an electric battery?

1. 
2. 
3. 
4. 

Q.

Potential difference in an electric circuit is created due to _____________.

1. voltmeter

2. bulb

3. conductor

4. cell or battery

Q.

The potential difference is created in an electric circuit due to ___.

1. a switch

2. a bulb

3. a conductor

4. a cell or battery

Q.

An electric cell is a device used___

1. to power microwave oven.

2. to power electric heater.

3. to power electrical generators.

4. to power smaller electrical circuits.

Q.

The potential difference is created in an electric circuit due to:

1. Conductor

2. Cell or battery

3. Voltmeter

4. Bulb

Q.

In an electric circuit, the current flows from:

1. negative to positive terminal

2. negative to neutral terminal

3. positive to negative terminal

4. positive to neutral terminal

Q. An electric cell has two terminals, and they are called positive(+) and negative(-) terminals.

1. True
2. False

Q. Draw the symbols of the following electrical components:
1. Electric cell
2. Switch in ON position
3. Electric bulb
4. Battery

Q. Statement 1: In order to make a battery, the positive terminal of one cell is connected to the negative terminal of the next.
Statement 2: In order to make a battery, the positive terminal of one cell is connected to the positive terminal of the next.

1. Statement 1 is true, statement 2 is false
2. Statement 1 is false, statement 2 is true
3. Both statements are true
4. Both statements are false

Q. Help Alex to figure out the electrical components required for the given circuit diagram.

1. Cells, bulbs, and a switch only
2. Wires, bulbs, switches, and cells
3. Wires, cells, and bulbs only
4. Wires, cells, bulbs, and a fuse

Q. What happens when an electric current is passed through ​an immersion rod and an electric bulb?​

1. The immersion rod and the electric bulb both produce only heat.
2. The immersion rod produces heat ​whereas the electric bulb produces light.
3. The immersion rod and the electric bulb both produce light as well as heat.
4. The immersion rod and the electric bulb both produce only light.​

Q.

Write the symbol of a cell in an electric circuit

Q. Nikhil has set up an electric circuit using some connecting copper wires, two cells, a switch and a bulb that he has taken from a torchlight. But after connecting all the components, the bulb is not glowing. What can be the possible reason(s) for this?
(i) The cells are dead.​
(ii) The circuit is open.​
(iii) The switch is closed.​
(iv) The connection between the terminals of the cells is not proper.​

1. 
   (i), (ii), (iii), and (iv)
2. 
   (i) and (ii) only
3. 
   (i), (ii), and (iv)
4. 
   (i), (ii), and (iii)

Q. Draw the symbols of the following electrical components:
1. Electric cell
2. Switch in ON position
3. Electric bulb
4. Battery

Q.

What are the signs of a bad battery?

Q. The following figure shows four cells fixed on the board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.

Q.

When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly.

1. True

Q. How is the direction of electric current related to the direction of flow of electrons in a wire?

1. Direction of flow of current is opposite of direction of flow of electron.
2. Direction of flow of current is random and independent of direction of flow of electron.
3. Direction of flow of current is same as direction of flow of electron.
4. The relation is different for conductors of different materials.

Q.

The terminals of a cell ___.

1. come in the combination of '+' and '-'

2. represent '+' for higher energy while '-' for lower energy.

3. represent '-' for higher energy while '+' for lower energy.

4. represent the uniform flow of energy.

Q. Which among the following symbols correctly represents the given diagram?

1. 
2. 
3. 
4. 

Q.

Normally, batteries come in various shapes and sizes.

1. True

2. False

Q.

Once the reserve ___inside the cells is over, ___ and the circuit breaks.

1. of excess protons, the delivery of energy stops

2. of excess electron, the delivery of energy stops

3. of excess protons, the delivery of energy starts

4. of excess electron, the delivery of energy starts

Q. The following figure shows four cells fixed on the board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four cells.

Q.

When we are inserting the battery into our devices, then we have to match + and - signs with the respective electrodes correctly.

1. True

2. False