For which of the following substance, resistance decreases with increase in temperature?
State how are the two resistors joined with a battery in each of the following cases when:
potential difference is same across each resistor
A battery of emf 12 V and internal resistance 2 Ω is connected with two resistors A and B of resistance 4 Ω and 6 Ω respectively joined in series.
1) Current in the circuit
2) The terminal voltage of the cell
3) The potential difference across 6Ω Resistor
4) Electrical energy spent per minute in the 4Ω resistor.