Battery and its working

Q.

A voltaic cell converts chemical energy into electrical energy.

1. True

2. False

Q.

Calculate the effective potential difference for the cells in series given below.

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

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