Answer:
A. Across the coil
Step-by-step explanation:
The pick up voltage is defined as that minimum voltage across the coil needed to close the switch.
First start with connecting the leads of the digital multimeter {DMM} to the open terminal pins. Slowly increase the power supply to the coil until the multimeter beeps to indicate engagement of the contacts and current. The voltage readings on for the power supply to the coil will be the Pick-Up voltage.
Answer choice B: is incorrect because the overload protector is used to interrupt current flow in an electric circuit when flow is high and could cause damage to the devices using the power supply.
Answer choice C is incorrect because it will measure voltage drop across the capacitor.
Answer choice D is incorrect because it will give the reverse voltage across an inductor when current passing through the inductor is shut off.