Thermal and Chemical Effect of Current — Physics STD 11 Science — Question

Two resistors having equal resistances are joined in series and a current is passed through the combination. Neglect any variation in resistance as the temperature changes. In a given time interval:

1. Equal amounts of thermal energy must be produced in the resistors.
2. Unequal amounts of thermal energy may be produced.
3. The temperature must rise equally in the resistors.
4. The temperature may rise equally in the resistors.