gc textbook chapter 18 Electric Currents (id: a72d85b0b)

本题目来源于试卷: gc textbook chapter 18 Electric Currents，类别为 IB物理学

[填空题]
A small immersion heb kuj8sw,8olm+. q ur5y8 v uq72ps 7ilj8xmm/4cpa 5later can be used in a car to heat a cup of water for coffee or tea. If the heater can heat 120 mL of wat 8va5lcu7mypsm/jp4l 7q 2xi8er from 25$^{\circ}\,C$ to 95$^{\circ}\,C$ in 8.0 min,
(a) approximately how much current does it draw from the car’s 12-V battery, $\approx$    A(Round to the nearest integer)
(b) what is its resistance? Assume the manufacturer’s claim of 60% efficiency.    $\Omega$

参考答案:
空格1: 10±2%  空格2: 1.2±2% 


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