Battery and It's Working

Q.

In a cell, _____energy is converted into ________energy.

1. Chemical, Electrical

2. Electrical, Mechanical

3. Mechanical, Electrical

4. Chemical, Mechanical

Q.

What is a dry charged battery?

Q.

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

Q.

The energy stored in a lead-acid battery has

1. only electric energy

2. only chemical energy

3. both, electric energy and chemical energy

4. none of these.

Q.

Current of constant magnitude flowing in one direction is called ___

1. Direct current

2. Alternating Current

3. Altering current

4. None of these

Q. Karan wants to create an electric circuit for his science project and he bought some copper wire to connect at the terminals of an electric cell. But he does not know how many terminals an electric cell has. Can you tell?

1. Three

2. One

3. Two

4. Four

Q. For the below figure, find the effective potential difference when the batteries are connected in series.

1. $20volts$
2. $24volts$
3. $26volts$
4. $25volts$

Q.

Two points have a potential difference of 10 V. After connecting a conductor with zero resistance between the points, the final potential at each point becomes 25 V. What could be their initial potentials?

1. 25V and 35V
2. 20V and 30V
3. 30V and 40V
4. 35V and 45V

Q. The conversion of energy that takes place in a battery is:

1. Mechanical to Chemical
2. Chemical to Heat
3. Chemical to Electrical
4. Heat to Electrical