4.2.2. Electrical current
A subsection of Physics, 5054, through 4. Electricity and magnetism
Listing 10 of 30 questions
In the engine compartment of a car, the battery supplies a current of 120 A to the starter motor. The starter motor is switched on for 3.5 s. Calculate the charge that passes through the starter motor in this time. charge = The starter motor circuit is switched on and off using a relay. The relay is controlled using a second circuit. A switch in the second circuit is used by the driver to operate the relay and turn the starter motor on and off. Explain how the current in the second circuit controls the relay.
5054_w17_qp_22
THEORY
2017
Paper 2, Variant 2
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Questions Discovered
30