[单选题]
A student constructed the series circuit below.
After closing the switch, which of the following is true about how the temperature of component A and current in the circuit will change with time?
Temperature of ACurrent in the circuit
A. Increases Increases
B. Increases Decreases
C. Decreases Increases
D. Decreases Decreases
参考答案: B
本题详细解析: Explanation:
From the circuit symbols in the data booklet, component A is a heating element.
When current flows in the circuit, the heating element will increase in temperature and the resistance will increase. This will increase the total resistance of the circuit and result in a decrease in the current due to the relationship $I=\frac{R}{V}$.
